Convert a single blood-chemistry result between conventional and SI units (e.g. glucose mg/dL <-> mmol/L, HbA1c % <-> mmol/mol). The analyte can be given by name or a common synonym in English or Russian. If to_unit is omitted and the analyte has exactly two units, it converts to the other one.

Resolve a lab-report label — including an abbreviation or a non-English name — to a canonical analyte, and report the units it can be expressed in. Useful for normalising results parsed from labs that use local naming conventions.

List every analyte this server can convert, with its display name, canonical unit and the full set of units available for conversion.