Test ID: TRSF
CPT code: 84466
LOINC: 3034-6
Specimen Type: SST or PST
Frequency: Setup: Daily; TAT <24 hrs
Instructions: 1mL serum or plasma from red or green gel tube. Centrifuge as soon as
clotted. Fasting specimen preferred.
Text: Differentiate iron deficiency anemia from hypochromic, microcytic
anemias; index of nutritional status. Transferrin is a glycoprotein that binds iron very tightly but reversibly.
Methodology: NEPHELOMETRY