LOINC Code 74807-9: Transferrin receptor.soluble/log Ferritin index [Mass ratio]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Transferrin receptor.soluble/log Ferritin index. It is commonly used with the system or sample type Ser/Plas.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Transferrin receptor.soluble/log Ferritin index [Mass Ratio] in Serum or Plasma
• Transferrin receptor.soluble/log Ferritin index
• The human soluble transferrin receptor (sTfR)/log ferritin index is intended as an aid in the diagnosis of iron deficiency anemia (IDA), and for the differential diagnosis of IDA and anemia of chronic disease (ACD). This term was created for but not limited in use to, the Coulter Soluble Transferrin Receptor sTfR /log Ferritin Index via automated chemiluminescent immunoassay.
• Chemistry; Ferr; Mass concentration ratio; Mass ratio; MCRto; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Rec; Recept; Receptors; Recp; Recptr; SerP; SerPl; SerPlas; Serum; Serum or plasma; Siderophilin; SR; sTfR; Tf; Trf; TRFRN

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions