{"uid":"cap_pBa13k4rE8rd3mXWD8kxy","slug":"magent-reticulocyte-index-calculator-01edff55","name":"Magent Reticulocyte Index Calculator","description":"Corrected reticulocyte count (retic% × Hct/45), Hillman 1969 maturation-shift reticulocyte index, and optional absolute reticulocyte count. Deterministic published arithmetic with citation; not a marrow diagnosis.","url":"https://api.magentlab.com/api/calc/reticulocyte_index","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":["reticulocyte_percent","hematocrit_percent"],"properties":{"rbc_million_ul":{"type":"number","description":"RBC count in 10^6/µL (1.0-8.0). When provided, ARC_per_uL is returned. Omitted omits ARC."},"hematocrit_percent":{"type":"number","description":"Hematocrit as a percent (10-70). CRC uses Hct/45. Maturation days: ≥40 → 1.0; ≥30 → 1.5; ≥20 → 2.0; else 2.5 (Hillman 1969 shift discretized)."},"reticulocyte_percent":{"type":"number","description":"Reticulocyte percent of RBC (0.1-30)."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"path":"/api/calc/reticulocyte_index","count":2,"items":[{"formula":"reticulocyte_index","citation":{"id":"hillman-1969","doi":"10.1172/JCI106002","title":"Characteristics of marrow production and reticulocyte maturation in normal man in response to anemia","source":"J Clin Invest. 1969;48(3):443-453","authors":"Hillman RS"},"arc_per_ul":100000,"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.","maturation_days":1,"formula_expression":"CRC = reticulocyte_percent * (hematocrit_percent / 45); RI = CRC / maturation_days; ARC_per_uL = reticulocyte_percent/100 * rbc_million_ul * 1e6 when RBC is given","hematocrit_percent":45,"reticulocyte_index":2,"reticulocyte_percent":2,"corrected_reticulocyte_percent":2},{"formula":"reticulocyte_index","citation":{"id":"hillman-1969","doi":"10.1172/JCI106002","title":"Characteristics of marrow production and reticulocyte maturation in normal man in response to anemia","source":"J Clin Invest. 1969;48(3):443-453","authors":"Hillman RS"},"arc_per_ul":100000,"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.","maturation_days":1,"formula_expression":"CRC = reticulocyte_percent * (hematocrit_percent / 45); RI = CRC / maturation_days; ARC_per_uL = reticulocyte_percent/100 * rbc_million_ul * 1e6 when RBC is given","hematocrit_percent":45,"reticulocyte_index":2,"reticulocyte_percent":2,"corrected_reticulocyte_percent":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_qnNlhWoq9aboi9Ra7MI1m","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 corrected reticulocyte count (CRC), Hillman 1969 maturation-shift reticulocyte index (RI), and optionally absolute reticulocyte count (ARC) from retic%, hematocrit, and optionally RBC count.","exampleAgentPrompt":"My patient has a reticulocyte percent of 2.4% and a hematocrit of 28% — can you calculate the corrected reticulocyte count and the Hillman reticulocyte index? Their RBC is 3.1 million/µL so include the absolute reticulocyte count too.","exampleUseCases":[{"title":"Anemia workup in clinic","prompt":"I'm evaluating a patient with anemia — their retic is 1.8%, hematocrit is 25%, and RBC is 2.8 million/µL. Can you calculate the corrected retic count and reticulocyte index to help me figure out if the marrow is responding appropriately?"},{"title":"EMR automation for hematology reports","prompt":"For a patient with reticulocyte percent 3.5% and hematocrit 32%, compute the CRC and Hillman 1969 reticulocyte index so I can auto-populate the hematology consult note."},{"title":"Checking hypoproliferative vs hyperproliferative anemia","prompt":"My patient's retic percent is 0.8% and their hematocrit is 20% — what's the corrected reticulocyte count and reticulocyte index? I need to know if this looks hypoproliferative."}],"resultDescription":"Returns the corrected reticulocyte count (retic% × Hct/45), the Hillman 1969 maturation-shift reticulocyte index using discretized maturation days (1.0 at Hct ≥40%, 1.5 at ≥30%, 2.0 at ≥20%, 2.5 below 20%), and optionally the absolute reticulocyte count per µL when RBC is provided. Includes the cited formula and interpretive context.","failureModes":["Reticulocyte percent out of range (0.1–30) returns validation error","Hematocrit out of range (10–70) returns validation error","RBC out of range (1.0–8.0 million/µL) when provided returns validation error","Missing required parameters (reticulocyte_percent or hematocrit_percent) returns 400 error","Payment header missing or insufficient USDC triggers 402 payment required"],"whenToPreferThis":"Use this endpoint when you need a deterministic, citation-backed computation of the corrected reticulocyte count and Hillman maturation-shift reticulocyte index — especially in automated clinical documentation, EMR enrichment, or anemia classification workflows. Prefer over general LLM-based calculation when reproducibility and published arithmetic with citation are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:12:59.882Z","isFirstParty":false}