{"uid":"cap_3vPZRuO767JAzHapwGH35","slug":"herdoo2-score-calculator-rodger-2008-b361e118","name":"HERDOO2 Score Calculator (Rodger 2008)","description":"Rodger 2008 HERDOO2 after a first unprovoked VTE. Score 1 each for hyperpigmentation, edema, or redness in either leg; D-dimer ≥250 μg/L while on anticoagulants; BMI ≥30; age ≥65 (equality scores). Max 4. low_risk is true only for women with score ≤1. Men have no low-risk subgroup in the derivation. Not a medical device and not a duration-of-anticoagulation order.","url":"https://api.magentlab.com/api/calc/herdoo2","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":["sex","her_signs","d_dimer_ge_250","bmi_kg_m2","age"],"properties":{"age":{"type":"integer","description":"Age in years (18-120). Scores 1 when ≥65. Age 65 meets (Rodger 2008)."},"sex":{"enum":["female","male"],"type":"string","description":"female or male. low_risk is true only when female and score ≤1. Men have no low-risk subgroup in Rodger 2008."},"bmi_kg_m2":{"type":"number","description":"Body-mass index in kg/m^2 (10-80). Caller-supplied; magent does not compute BMI from height and weight. Scores 1 when ≥30. Equality at 30.0 meets."},"her_signs":{"type":"boolean","description":"Hyperpigmentation, edema, or redness in either leg (Rodger 2008). Caller-assigned. true or false. 1 point if true."},"d_dimer_ge_250":{"type":"boolean","description":"D-dimer ≥250 μg/L while on anticoagulants (Rodger 2008). Caller-assigned; magent does not assay D-dimer. true or false. 1 point if true."}}}},"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_1Bigu4O_21kMwOPffPE_p","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 HERDOO2 score for women after a first unprovoked VTE to identify those at low risk of recurrence who may safely stop anticoagulation.","exampleAgentPrompt":"Calculate the HERDOO2 score for a 62-year-old female patient with a BMI of 27, no HER signs in either leg, and a D-dimer of 310 μg/L while she's on anticoagulants — is she in the low-risk group?","exampleUseCases":[{"title":"Post-DVT anticoagulation stop decision","prompt":"My patient is a 58-year-old woman with a first unprovoked DVT, BMI 32, no hyperpigmentation or edema or redness in her legs, and her D-dimer came back at 200 μg/L while on anticoagulants — can you calculate her HERDOO2 score and tell me if she qualifies as low risk?"},{"title":"Low-risk VTE recurrence triage in female patients","prompt":"Run the HERDOO2 rule for a 70-year-old female patient with BMI 26, HER signs present, and D-dimer of 260 μg/L on anticoagulation — what's her score and is she low risk?"},{"title":"Automated VTE risk scoring in clinical workflow","prompt":"For a 45-year-old female, BMI 31, no HER signs, D-dimer 190 μg/L on anticoagulants — compute the HERDOO2 score and flag whether she meets the low-risk threshold under Rodger 2008."}],"resultDescription":"Returns a HERDOO2 integer score (0–4) summed from four binary criteria (HER signs, D-dimer ≥250 μg/L on anticoagulation, BMI ≥30, age ≥65), plus a low_risk boolean that is true only for female patients with a score ≤1. Male patients always have low_risk false per the original derivation study.","failureModes":["Missing required query parameters (sex, her_signs, d_dimer_ge_250, bmi_kg_m2, age) returns a validation error","BMI outside the 10–80 range or age outside 18–120 may be rejected or return an error","Invalid enum value for sex (not 'female' or 'male') returns a validation error","Non-boolean values for her_signs or d_dimer_ge_250 cause a schema error","Payment failure (insufficient USDC balance or missing x402 header) returns a 402 response"],"whenToPreferThis":"Use this endpoint when you need a standards-based, validated HERDOO2 score for a female patient after a first unprovoked VTE and want a structured machine-readable low_risk flag. Prefer it over manual calculation when integrating into an automated clinical workflow or decision-support pipeline. Note: this endpoint does not compute BMI from height and weight, so the caller must supply pre-computed BMI. It is not a substitute for clinical judgment or a medical device.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:51:05.921Z","isFirstParty":false}