{"id":66865,"date":"2026-10-13T09:56:18","date_gmt":"2026-10-13T06:56:18","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66865"},"modified":"2026-10-13T09:56:18","modified_gmt":"2026-10-13T06:56:18","slug":"sofa-score-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/medical\/sofa-score-calculator\/","title":{"rendered":"SOFA Score Calculator"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Score the Six Organ Systems of the Sequential Organ Failure Assessment<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66865\" data-favorite-title=\"SOFA Score\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/medical\/sofa-score-calculator\/\" data-favorite-excerpt=\"Calculate the SOFA score from PaO\u2082\/FiO\u2082, platelets, bilirubin, blood pressure support, GCS, creatinine and urine output. Enter your lab values and vasopressor category to get the total and per-organ breakdown.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-flask\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/en\/medical\/sofa-score-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66865\" data-post=\"66865\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"is-single field\" id=\"input-1\"><span class=\"font-semibold\">Respiration (Oxygenation)<\/span><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">Arterial PaO\u2082<\/label><div class=\"term\">PaO\u2082<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"arterial_pao\" id=\"field-2\" aria-describedby=\"calc-info-2\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 120\" min=\"10\" max=\"700\" value=\"120\"\/><div class=\"grid grid-cols-1\"><select id=\"field-3\" name=\"unit\" aria-label=\"Unit\"><option value=\"mmHg\" selected>mmHg<\/option><option value=\"kPa\">kPa<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-2\">Partial pressure of oxygen in arterial blood<\/small><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-4\">Inspired oxygen (FiO\u2082)<\/label><div class=\"term\">FiO\u2082<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"inspired_oxygen_fio\" id=\"field-4\" aria-describedby=\"calc-unit-4 calc-info-4\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 40\" min=\"21\" max=\"100\" value=\"40\"\/><div class=\"unit\" id=\"calc-unit-4\">%<\/div><small id=\"calc-info-4\">Room air = 21; a value between 0 and 1 is read as a fraction<\/small><\/div><div class=\"field is-checkbox\" id=\"input-4\"><input type=\"checkbox\" id=\"field-5\" value=\"1\"\/><label for=\"field-5\">Mechanical ventilation \/ respiratory support<\/label><\/div><div class=\"is-single field\" id=\"input-5\"><span class=\"font-semibold\">Coagulation<\/span><\/div><div class=\"field has-term\" id=\"input-6\"><label for=\"field-7\">Platelet count<\/label><div class=\"term\">PLT<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"platelet_count\" id=\"field-7\" aria-describedby=\"calc-unit-7\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 95\" min=\"0\" max=\"2000\" value=\"95\"\/><div class=\"unit\" id=\"calc-unit-7\">\u00d710\u00b3\/\u00b5L<\/div><\/div><div class=\"is-single field\" id=\"input-7\"><span class=\"font-semibold\">Liver (Bilirubin)<\/span><\/div><div class=\"field has-term\" id=\"input-8\"><label for=\"field-9\">Total bilirubin<\/label><div class=\"term\">Bili<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"total_bilirubin\" id=\"field-9\" aria-describedby=\"calc-info-9\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 2.5\" min=\"0\" max=\"60\" value=\"2.5\"\/><div class=\"grid grid-cols-1\"><select id=\"field-10\" name=\"unit\" aria-label=\"Unit\"><option value=\"mgdL\" selected>mg\/dL<\/option><option value=\"umolL\">\u00b5mol\/L<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-9\">Serum total bilirubin<\/small><\/div><div class=\"is-single field\" id=\"input-9\"><span class=\"font-semibold\">Cardiovascular (Blood Pressure Support)<\/span><\/div><div class=\"field\" id=\"input-10\"><label for=\"field-12\">Blood pressure support \/ vasopressors<\/label><div class=\"grid grid-cols-1\"><select id=\"field-12\" name=\"blood_pressure_support_vasopressors\"><option value=\"MAP \u2265 70 mmHg \u2014 no vasopressors\">MAP \u2265 70 mmHg \u2014 no vasopressors<\/option><option value=\"MAP &lt; 70 mmHg\">MAP &lt; 70 mmHg<\/option><option value=\"Dopamine \u2264 5 or dobutamine (any dose)\">Dopamine \u2264 5 or dobutamine (any dose)<\/option><option value=\"Dopamine &gt; 5, epinephrine \u2264 0.1, or norepinephrine \u2264 0.1\">Dopamine &gt; 5, epinephrine \u2264 0.1, or norepinephrine \u2264 0.1<\/option><option value=\"Dopamine &gt; 15, epinephrine &gt; 0.1, or norepinephrine &gt; 0.1\">Dopamine &gt; 15, epinephrine &gt; 0.1, or norepinephrine &gt; 0.1<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><div class=\"is-single field\" id=\"input-11\"><span class=\"font-semibold\">Central Nervous System<\/span><\/div><div class=\"field has-term\" id=\"input-12\"><label for=\"field-14\">Glasgow Coma Scale<\/label><div class=\"term\">GCS<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"glasgow_coma_scale\" id=\"field-14\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"3\u201315\" min=\"3\" max=\"15\" value=\"13\"\/><\/div><div class=\"is-single field\" id=\"input-13\"><span class=\"font-semibold\">Renal (Creatinine or Urine Output)<\/span><\/div><div class=\"field has-term\" id=\"input-14\"><label for=\"field-16\">Creatinine<\/label><div class=\"term\">Cr<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"creatinine\" id=\"field-16\" aria-describedby=\"calc-info-16\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 2.2\" min=\"0\" max=\"25\" value=\"2.2\"\/><div class=\"grid grid-cols-1\"><select id=\"field-17\" name=\"unit\" aria-label=\"Unit\"><option value=\"mgdL\" selected>mg\/dL<\/option><option value=\"umolL\">\u00b5mol\/L<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-16\">Serum creatinine<\/small><\/div><div class=\"field\" id=\"input-15\"><label for=\"field-18\">Urine output<\/label><div class=\"grid grid-cols-1\"><select id=\"field-18\" name=\"urine_output\"><option value=\"0\">\u2265 500 mL\/day (or not measured)<\/option><option value=\"3\">&lt; 500 mL\/day<\/option><option value=\"4\">&lt; 200 mL\/day<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"66865\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Your SOFA Score<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Respiration score<\/span><span class=\"result-term\">Resp<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-2\"><span class=\"field-title\"><span>Coagulation score<\/span><span class=\"result-term\">Coag<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-3\"><span class=\"field-title\"><span>Liver score<\/span><span class=\"result-term\">Hepatic<\/span><\/span><span class=\"field-value\" id=\"result-3\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-4\"><span class=\"field-title\"><span>Cardiovascular score<\/span><span class=\"result-term\">CV<\/span><\/span><span class=\"field-value\" id=\"result-4\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-5\"><span class=\"field-title\"><span>CNS score<\/span><span class=\"result-term\">CNS<\/span><\/span><span class=\"field-value\" id=\"result-5\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-6\"><span class=\"field-title\"><span>Renal score<\/span><span class=\"result-term\">Renal<\/span><\/span><span class=\"field-value\" id=\"result-6\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-7\"><span class=\"field-title\"><span>Total SOFA score<\/span><span class=\"result-term\">SOFA<\/span><\/span><span class=\"field-value\" id=\"result-7\" data-unit=\"points\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result is-column\" id=\"output-8\"><span class=\"field-title\"><span>What your score means<\/span><\/span><span class=\"field-value\" id=\"result-8\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copy link to this calculation<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Leave a Comment<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"66865\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Like <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Helpful <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confused <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Disappointed <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Inaccurate <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>SOFA Score Formula<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[ \\text{SOFA} = R + C + L + \\text{CV} + \\text{CNS} + K \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(R\\) \u2014 respiration score, based on the PaO\u2082\/FiO\u2082 ratio (mmHg)<\/li>\n<li>\\(C\\) \u2014 coagulation score, based on the platelet count (\u00d710\u00b3\/\u00b5L)<\/li>\n<li>\\(L\\) \u2014 liver score, based on total bilirubin (mg\/dL)<\/li>\n<li>\\(\\text{CV}\\) \u2014 cardiovascular score, based on mean arterial pressure and vasopressor doses<\/li>\n<li>\\(\\text{CNS}\\) \u2014 central nervous system score, based on the Glasgow Coma Scale<\/li>\n<li>\\(K\\) \u2014 renal score, based on creatinine (mg\/dL) or urine output, whichever is worse<\/li>\n<\/ul>\n<p>Each organ system is graded from 0 (normal function) to 4 (severe failure), so the total SOFA score ranges from 0 to 24 points. Higher totals indicate more severe organ dysfunction.<\/p>\n<p>The grading thresholds are:<\/p>\n<ul>\n<li><strong>Respiration (PaO\u2082\/FiO\u2082, mmHg):<\/strong> \u2265400 = 0; &lt;400 = 1; &lt;300 = 2; &lt;200 with respiratory support = 3; &lt;100 with respiratory support = 4<\/li>\n<li><strong>Coagulation (platelets \u00d710\u00b3\/\u00b5L):<\/strong> \u2265150 = 0; &lt;150 = 1; &lt;100 = 2; &lt;50 = 3; &lt;20 = 4<\/li>\n<li><strong>Liver (bilirubin, mg\/dL):<\/strong> &lt;1.2 = 0; 1.2\u20131.9 = 1; 2.0\u20135.9 = 2; 6.0\u201311.9 = 3; \u226512.0 = 4<\/li>\n<li><strong>Cardiovascular:<\/strong> MAP \u226570 mmHg without vasopressors = 0; MAP &lt;70 mmHg = 1; dopamine \u22645 or dobutamine (any dose) = 2; dopamine &gt;5, epinephrine \u22640.1 or norepinephrine \u22640.1 \u00b5g\/kg\/min = 3; dopamine &gt;15, epinephrine &gt;0.1 or norepinephrine &gt;0.1 \u00b5g\/kg\/min = 4<\/li>\n<li><strong>CNS (Glasgow Coma Scale):<\/strong> 15 = 0; 13\u201314 = 1; 10\u201312 = 2; 6\u20139 = 3; &lt;6 = 4<\/li>\n<li><strong>Renal (creatinine, mg\/dL, or urine output):<\/strong> &lt;1.2 = 0; 1.2\u20131.9 = 1; 2.0\u20133.4 = 2; 3.5\u20134.9 or urine output &lt;500 mL\/day = 3; \u22655.0 or urine output &lt;200 mL\/day = 4<\/li>\n<\/ul>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-459\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>SOFA Score \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> an ICU patient on non-invasive respiratory support with FiO\u2082 40% has a PaO\u2082 of 120 mmHg. Platelets are 95 \u00d710\u00b3\/\u00b5L, total bilirubin 2.5 mg\/dL, creatinine 2.2 mg\/dL, urine output \u2265500 mL\/day, and GCS 13. The patient receives norepinephrine at 0.08 \u00b5g\/kg\/min.<\/p>\n<p>\\[ \\text{PaO}_2\/\\text{FiO}_2 = 120 \/ 0.40 = 300 \\implies R = 1 \\]<\/p>\n<p>\\[ \\text{PLT} = 95 \\implies C = 2, \\quad \\text{Bili} = 2.5 \\implies L = 2 \\]<\/p>\n<p>\\[ \\text{norepinephrine} \\le 0.1 \\implies \\text{CV} = 3, \\quad \\text{GCS} = 13 \\implies \\text{CNS} = 1 \\]<\/p>\n<p>\\[ \\text{Cr} = 2.2 \\implies K = 2 \\]<\/p>\n<p>\\[ \\text{SOFA} = 1 + 2 + 2 + 3 + 1 + 2 = 11 \\]<\/p>\n<p><strong>Result:<\/strong> SOFA score = 11 of 24 points, with reported in-hospital mortality of roughly 40\u201350% in this range.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Enter the <strong>Arterial PaO\u2082<\/strong> value and select mmHg or kPa as the unit; the value is converted automatically.<\/li>\n<li>Enter the <strong>Inspired oxygen (FiO\u2082)<\/strong> as a percentage (room air = 21). A value between 0 and 1, such as 0.4, is read as a fraction.<\/li>\n<li>Tick <strong>Mechanical ventilation \/ respiratory support<\/strong> if the patient receives any form of respiratory support. SOFA grades 3\u20134 for respiration formally require it.<\/li>\n<li>Enter the <strong>Platelet count<\/strong> in \u00d710\u00b3\/\u00b5L (e.g. 95 for 95,000\/\u00b5L).<\/li>\n<li>Enter the <strong>Total bilirubin<\/strong> and choose mg\/dL or \u00b5mol\/L.<\/li>\n<li>Select the matching option under <strong>Blood pressure support \/ vasopressors<\/strong>, based on the mean arterial pressure and vasopressor doses in \u00b5g\/kg\/min.<\/li>\n<li>Enter the <strong>Glasgow Coma Scale<\/strong> (3\u201315). If you need help scoring it, see our <a href=\"https:\/\/wpcalc.com\/en\/medical\/glasgow-coma-scale-calculator\/\">Glasgow Coma Scale calculator<\/a>.<\/li>\n<li>Enter the <strong>Creatinine<\/strong> value with its unit, and select the <strong>Urine output<\/strong> category. The renal score is the worse of the two criteria.<\/li>\n<\/ol>\n<p>The results panel shows each organ subscore, the total SOFA score, and an interpretation with the PaO\u2082\/FiO\u2082 ratio and converted values actually used.<\/p>\n<h2>What is the SOFA score?<\/h2>\n<p>The Sequential Organ Failure Assessment (SOFA) score quantifies the severity of organ dysfunction in critically ill patients across six systems: respiration, coagulation, liver, cardiovascular, central nervous system and kidneys. It was introduced by Vincent et al. in 1996 to describe morbidity in ICU populations in a reproducible, repeatable way, using simple bedside measurements and routine lab values.<\/p>\n<p>Each organ is scored 0\u20134, giving a total of 0\u201324 points. A score of 0 means normal organ function; higher subscores indicate progressively severe failure of that organ. The total is most informative when tracked over time: a rising SOFA score suggests worsening organ dysfunction, while a falling score suggests recovery. In ICU studies, in-hospital mortality rises from under 10% at scores of 0\u20136, to roughly 15\u201320% at 7\u20139, 40\u201350% at 10\u201312, and above 50% beyond 12 points.<\/p>\n<p>The SOFA score is also central to the modern definition of sepsis. Under the Sepsis-3 criteria (2016), a suspected infection together with an acute increase of 2 or more SOFA points from baseline indicates sepsis, and septic shock is defined by vasopressor requirements plus a lactate above 2 mmol\/L despite adequate fluid resuscitation. For rapid bedside screening outside the ICU, the <a href=\"https:\/\/wpcalc.com\/en\/medical\/qsofa-score-calculator\/\">qSOFA score<\/a> uses only three of the SOFA components; the older <a href=\"https:\/\/wpcalc.com\/en\/medical\/sirs-criteria-calculator\/\">SIRS criteria<\/a> remain an alternative screening trigger.<\/p>\n<h2>Limitations and practical tips<\/h2>\n<ul>\n<li>The SOFA score was designed for ICU patients. Applied to general ward populations, it can underestimate risk because many patients never develop measurable organ dysfunction there.<\/li>\n<li>The score describes current organ function, not prognosis for an individual. The mortality figures attached to score ranges are population averages from observational studies, not personal predictions.<\/li>\n<li>For sepsis diagnosis, the change from the patient's baseline (\u0394SOFA) matters more than a single absolute value. If no baseline is known, community patients are often assumed to have a baseline of 0.<\/li>\n<li>The renal subscore takes the worse of the creatinine and urine output criteria, so a low urine output can raise it even when creatinine is only mildly elevated.<\/li>\n<li>Respiratory grades 3\u20134 formally require respiratory support (mechanical ventilation or non-invasive ventilation); the calculator adds a note when your PaO\u2082\/FiO\u2082 falls below 200 without support flagged.<\/li>\n<li>Values entered in kPa or \u00b5mol\/L are converted to mmHg and mg\/dL internally using standard factors (1 kPa = 7.50062 mmHg; bilirubin \u00b5mol\/L \u00f7 17.104; creatinine \u00b5mol\/L \u00f7 88.4).<\/li>\n<li>Related tools: for liver-specific severity in cirrhosis see the <a href=\"https:\/\/wpcalc.com\/en\/medical\/child-pugh-score-calculator\/\">Child-Pugh score<\/a>, and for renal function assessment the <a href=\"https:\/\/wpcalc.com\/en\/medical\/egfr-calculator-ckd-epi-2021\/\">eGFR calculator (CKD-EPI 2021)<\/a>.<\/li>\n<li>This calculator is for information only and does not replace clinical judgment or a medical diagnosis.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Calculate the SOFA score from PaO\u2082\/FiO\u2082, platelets, bilirubin, blood pressure support, GCS, creatinine and urine output. Enter your lab values and vasopressor category to get the total and per-organ breakdown.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[50],"class_list":["post-66865","post","type-post","status-publish","format-standard","hentry","category-medical","tag-diagnostics"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=66865"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66865\/revisions"}],"predecessor-version":[{"id":66866,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66865\/revisions\/66866"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}