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GET
Returns a single biomarker by its numeric id. Useful for resolving the IDs returned by List Panels or appointment payloads into full details (name, unit, material, category) without scanning the entire catalog. Only blood-collectable biomarkers are exposed (the same catalog as List Biomarkers). Archived biomarkers — and biomarkers whose sample is a non-blood material (urine, saliva, stool, swabs, …) — return 404.

Path parameters

number
required
Biomarker identifier.

Response

number
Stable biomarker identifier.
string
URL-safe identifier.
string
Display name.
string | null
Long-form description, when available.
string | null
Primary category (e.g. Hormones, Vitamins).
string | null
Secondary category.
"clinical" | "genetic"
Whether this biomarker is a clinical measurement or a genetic marker.
string | null
Sample material required (e.g. serum, whole_blood).
object | null
Default measurement unit. Use id to dereference against List Units if you need stable identity across renames.

Error responses