Days Set Up
Analytic Time

2 - 4 days

MiChart Code
Soluble Transferrin Receptor (sTfR)
Soft Order Code

Test Updated:


Soluble Transferrin Receptor

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Test Overview

Test Methodology

Immunoturbidimetric Assay

Test Usage

The evaluation of suspected iron-deficiency in patients who may have inflammation, infection, or chronic disease and other conditions in which ferritin concentration does not correlate with iron status, and also used in the evaluation of insulin-dependent diabetics for iron-deficiency resulting from gastric autoimmunity and atrophic gastritis.

Reference Range

1.8 - 4.6 mg/L

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect specimen in an SST or Red top tube. Centrifuge, aliquot serum into a plastic vial and freeze within 2 hours.

Yellow Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.25 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.