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api.magentlab.com calc mentzer
https://api.magentlab.com/api/calc/mentzer
answers 402
Mentzer index as MCV in fL divided by RBC count in millions per µL (Mentzer 1973 Lancet letter). Quotient <13 favors β-thalassaemia trait; >13 favors iron deficiency; 13 is indeterminate. Deterministic published arithmetic with citation. Not a diagnosis of thalassemia or iron deficiency; magent does not apply later cutoffs that are not in that letter.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.005
- Network
- base
- Pay to
- 0x836Be278f1739fB4308091cD1852F7971Bc19Ee2
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 67 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:17:12.480Z (2h ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fmentzer"