Soluble Transferrin Receptor (sTfR)

CPT: 84466
Iron

What This Test Measures

Surface protein concentration reflecting iron-deficient erythropoiesis; not affected by inflammation.

Preparation

No fasting required

General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.

Turnaround Time

Varies by lab

Clinical Notes

Distinguishes iron-deficiency anemia from anemia of chronic disease; not widely available DTC

ICD-10 Codes

Common diagnosis codes associated with this test. Codes are assigned by your provider.

D50.9Iron deficiency anemia, unspecified
D64.9Anemia, unspecified
E40Kwashiorkor (severe protein malnutrition)

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Lab Codes

Proprietary codes used by each lab for this test.

ARUP Laboratories
2002283(order_code)
LabCorp
143123(order_code)
Mayo Clinic Labs
STFR/80089(order_code)
NYU Langone Health
LAB10811(order_code)
Quest Diagnostics
36498(order_code)
Stanford Health Care
YSTFR(order_code)

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Related Tests

UIBC (Unsaturated Iron Binding Capacity)

CPT: 83550

Ferritin

CPT: 82728

Iron, Serum

CPT: 83540

TIBC (Total Iron Binding Capacity)

CPT: 83550

Iron & TIBC Panel

CPT: 83540, 83550

Iron and TIBC Panel

CPT: 83540, 83550

For informational purposes only

This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.