{"uid":"cap_xViXGCxKiZoMf8BOqWDJy","slug":"michigan-picc-risk-score-chopra-2017-66a1174e","name":"Michigan PICC Risk Score (Chopra 2017)","description":"Chopra 2017 Michigan Risk Score for PICC-associated thrombosis: another CVC at PICC placement 1, WBC >12 x10^9/L 1 (12.0 does not score), active cancer 2, PICC lumens single 0 / double 2 / triple 3 (triple includes quad), VTE history never 0 / remote 2 / within 30 days 3 (one field; do not add remote and recent). Max 10. Classes I=0 (observed 0.9%), II=1-2 (1.6%), III=3-4 (2.7%), IV=>4 (4.7% Table 4). Not a PICC order. magent does not count lumens.","url":"https://api.magentlab.com/api/calc/michigan_picc","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":["other_cvc","active_cancer","picc_lumens","vte_history"],"properties":{"wbc_ul":{"type":"number","description":"WBC in cells/µL (same as cells/mm^3) at PICC insertion. Provide wbc_k_ul or wbc_ul. Range 10-500000. >12000 scores 1 (12000 does not; 12001 does)."},"wbc_k_ul":{"type":"number","description":"WBC in 10^3/µL (same as 10^9/L) at PICC insertion. Provide wbc_k_ul or wbc_ul. Range 0.01-500. >12 scores 1 (12.0 does not)."},"other_cvc":{"type":"boolean","description":"Another CVC present when the index PICC is placed, as assigned by the caller (Chopra 2017). true or false. true scores 1. magent does not count catheters."},"picc_lumens":{"enum":["single","double","triple"],"type":"string","description":"PICC lumen count as assigned by the caller (Chopra 2017). single scores 0; double scores 2; triple scores 3. triple includes quad as published. magent does not count lumens."},"vte_history":{"enum":["never","remote","within_30_days"],"type":"string","description":"One 3-tier VTE history field (Chopra 2017). never scores 0; remote (prior VTE beyond 30 days) scores 2; within_30_days scores 3. Do not add remote and recent."},"active_cancer":{"type":"boolean","description":"Active cancer as assigned by the caller (Chopra 2017). true or false. true scores 2."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_qpRgozBdG2PQrvJCf8z-j","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":"Calculates the Chopra 2017 Michigan Risk Score for PICC-associated thrombosis and returns a risk class (I–IV) with observed thrombosis rates","exampleAgentPrompt":"Calculate the Michigan PICC thrombosis risk score for a patient with a double-lumen PICC, no other CVC, active cancer, a WBC of 14.2 x10^9/L, and a remote VTE history beyond 30 days.","exampleUseCases":[{"title":"Pre-placement PICC thrombosis risk stratification","prompt":"My oncology patient is about to get a triple-lumen PICC placed. She has active cancer, her WBC is 15,000 cells/µL, she had a DVT two years ago, and she already has a port in place. What's her Michigan PICC risk score and class?"},{"title":"Low-risk PICC patient confirmation","prompt":"Can you run the Chopra 2017 Michigan score for a patient with a single-lumen PICC, no other central lines, no active cancer, WBC of 8.5 x10^9/L, and no prior VTE history? I want to confirm they're in risk class I."},{"title":"Recent VTE patient triple-lumen assessment","prompt":"Score the Michigan PICC risk for a patient who had a pulmonary embolism 20 days ago, has a WBC of 11.8 x10^9/L, no active cancer, no other CVCs, and is getting a double-lumen PICC."}],"resultDescription":"Returns a numeric Michigan Risk Score (0–10), the corresponding risk class (I=0, II=1–2, III=3–4, IV=>4), and the published observed PICC-associated thrombosis rate for that class (0.9%, 1.6%, 2.7%, or 4.7%)","failureModes":["Missing required fields (other_cvc, active_cancer, picc_lumens, vte_history) returns a validation error","WBC provided outside accepted range (0.01–500 for wbc_k_ul or 10–500,000 for wbc_ul) may return an error or be rejected","Providing both wbc_k_ul and wbc_ul simultaneously may cause ambiguity; only one should be supplied","Invalid enum values for picc_lumens or vte_history return a schema validation error","Payment failure (x402 protocol) prevents the call from completing"],"whenToPreferThis":"Use this endpoint when you need to apply the validated Chopra 2017 Michigan Risk Score specifically for PICC-associated venous thrombosis; it is not a generic VTE risk calculator and does not apply to other catheter types. Prefer it over manual calculation to ensure exact published scoring logic (e.g. WBC >12.0 not ≥12.0, vte_history as a single 3-tier field rather than additive remote+recent).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:07:50.779Z","isFirstParty":false}