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Test ID BLOD1175 sTfR (Soluble Transferrin Receptor), Serum

Useful For

Aiding in the diagnosis of iron deficiency anemia in patients with chronic disease

Specimen Type

Serum


Ordering Guidance


This test should not be used for routine iron status evaluation for patients without confounding pathologies (such as inflammation, infection, chronic disease, or malignancy). For such cases order FERR1 / Ferritin, Serum.



Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL Serum

Collection Instructions:

1. Within 2 hours of collection, centrifuge the specimen.

2. For red-top tubes, aliquot serum into a plastic vial prior to sending.


Specimen Minimum Volume

Serum: 0.6 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 7 days
  Frozen  90 days
  Ambient  7 days

Reject Due To

Gross hemolysis Reject

Day(s) Performed

Monday through Friday

Report Available

1 to 3 days

Method Name

Chemiluminescent Immunoassay

Reporting Name

Soluble Transferrin Receptor (sTfR)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Secondary ID

623578

CPT Code Information

84238

Reference Values

0.63-2.64 mg/L

 

It is reported that African Americans may have slightly higher values.

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.