{"uid":"cap_ZavEhyQ9dNrHD0LnQLgT3","slug":"abc-score-calculator-assessment-of-blood-consumption-cb18e560","name":"ABC Score Calculator (Assessment of Blood Consumption)","description":"Nunez 2009 ABC (assessment of blood consumption): penetrating mechanism, arrival SBP ≤90 mm Hg, arrival HR ≥120 bpm, and positive FAST; 1 point each, max 4. score_ge_2 is the published ≥2 cutoff (75% sensitive / 86% specific for massive transfusion in that paper). Deterministic published arithmetic with citation; not a transfusion or MTP order; not TASH; not ABC/2 ICH volume.","url":"https://api.magentlab.com/api/calc/abc_score","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["penetrating","systolic_mm_hg","heart_rate_bpm","positive_fast"],"properties":{"penetrating":{"type":"boolean","description":"Penetrating injury mechanism as assigned by the caller (Nunez 2009). true or false. magent does not assign mechanism."},"positive_fast":{"type":"boolean","description":"Positive FAST as assigned by the caller (Nunez 2009). true or false. magent does not interpret FAST images."},"heart_rate_bpm":{"type":"integer","description":"Arrival heart rate in beats per minute (integer 30-220). ≥120 scores 1."},"systolic_mm_hg":{"type":"integer","description":"Arrival systolic blood pressure in mm Hg (integer 0-300). ≤90 scores 1."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"path":"/api/calc/abc_score","count":2,"items":[{"score":0,"formula":"abc_score","citation":{"id":"nunez-2009","doi":"10.1097/TA.0b013e3181961c35","pmid":"19204506","title":"Early prediction of massive transfusion in trauma: simple as ABC (assessment of blood consumption)?","source":"J Trauma. 2009;66(2):346-352","authors":"Nunez TC, Voskresensky IV, Dossett LA, Shinall R, Dutton WD, Cotton BA"},"max_score":4,"components":[{"factor":"penetrating","points":0,"present":false},{"value":120,"factor":"sbp_le_90","points":0,"present":false},{"value":80,"factor":"hr_ge_120","points":0,"present":false},{"factor":"positive_fast","points":0,"present":false}],"disclaimer":"Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.","score_ge_2":false,"formula_expression":"ABC = penetrating + sbp_le_90 + hr_ge_120 + positive_fast; each 1; max 4; score_ge_2 iff score >= 2"},{"score":0,"formula":"abc_score","citation":{"id":"nunez-2009","doi":"10.1097/TA.0b013e3181961c35","pmid":"19204506","title":"Early prediction of massive transfusion in trauma: simple as ABC (assessment of blood consumption)?","source":"J Trauma. 2009;66(2):346-352","authors":"Nunez TC, Voskresensky IV, Dossett LA, Shinall R, Dutton WD, Cotton BA"},"max_score":4,"components":[{"factor":"penetrating","points":0,"present":false},{"value":120,"factor":"sbp_le_90","points":0,"present":false},{"value":80,"factor":"hr_ge_120","points":0,"present":false},{"factor":"positive_fast","points":0,"present":false}],"disclaimer":"Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.","score_ge_2":false,"formula_expression":"ABC = penetrating + sbp_le_90 + hr_ge_120 + positive_fast; each 1; max 4; score_ge_2 iff score >= 2"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_gOOld4wfgbWsOaqx4xyKr","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the Nunez 2009 ABC Score for predicting massive transfusion need based on injury mechanism, arrival SBP, arrival HR, and FAST result","exampleAgentPrompt":"Calculate the ABC score for a trauma patient who arrived with a penetrating mechanism, systolic BP of 80 mm Hg, heart rate of 135 bpm, and a positive FAST exam — and tell me if they hit the ≥2 threshold for massive transfusion risk.","exampleUseCases":[{"title":"ER triage massive transfusion decision","prompt":"My trauma patient came in with a gunshot wound (penetrating), arrival BP was 85 systolic, heart rate 125, and FAST is positive — can you run the ABC score and tell me if they're at the ≥2 cutoff for massive transfusion?"},{"title":"Blunt trauma with borderline vitals","prompt":"Patient arrived after a blunt motor vehicle crash, SBP 95 mm Hg, heart rate 110 bpm, FAST is negative — what's their ABC score and do they meet the massive transfusion threshold?"},{"title":"Trauma registry retrospective scoring","prompt":"I need to retrospectively score a case: non-penetrating mechanism, arrival systolic BP 70, heart rate 140 bpm, positive FAST — give me the ABC score and whether it's ≥2."}],"resultDescription":"Returns the integer ABC score from 0 to 4 (one point each for: penetrating mechanism, SBP ≤90 mm Hg, HR ≥120 bpm, positive FAST) and a boolean score_ge_2 flag indicating whether the patient meets the published ≥2 cutoff (75% sensitive, 86% specific for massive transfusion per Nunez 2009).","failureModes":["Missing required query parameters (penetrating, systolic_mm_hg, heart_rate_bpm, positive_fast) returns 400 error","systolic_mm_hg outside 0–300 or heart_rate_bpm outside 30–220 range may be rejected as invalid","Payment failure or missing x402 credentials returns 402","Caller must assign penetrating mechanism and FAST interpretation — the API does not infer these from images or narrative"],"whenToPreferThis":"Use this endpoint when you need a deterministic, citeable implementation of the Nunez 2009 ABC Score specifically — not TASH, not ABC/2 ICH volume, not a general transfusion order. Ideal for trauma decision support agents, retrospective registry scoring, or any workflow where you need to apply published arithmetic with a documented sensitivity/specificity profile for massive transfusion prediction.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:17:30.545Z","isFirstParty":false}