STRS – “Transferrin Receptor (TFR) Soluble” replaced by STR – “Soluble Transferrin Receptor”

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Inactivated/Replace Test

Effective Date

10/20/2025

Included in Report

WML Test Directory Update | October 2025

Replacement Test

Soluble Transferrin Receptor

Inactivated Test Details

Mnemonic

STRS

Ordering Code

3702360

CPT-4 Codes(s)

84238

Replacement Test Details

Mnemonic

STR

Ordering Code

3600546

CPT-4 Codes(s)

84238

Turnaround Time
3 - 5 days
Performed
Sunday - Saturday
Legacy Code
STR
Example Report
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Specimen Information

Collect

Serum separator tube (SST)

Specimen Preparation

Centrifuge, separate serum from cells and send 1.0 mL serum in a screw capped plastic vial.

Alternate Specimen

Plasma separator tube, green lithium heparin

Minimum Volume

0.4 mL

Transport Temperature

Refrigerated

Rejection Criteria

Contaminated, lipemic, severely hemolyzed, or icteric specimens

Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: 30 days (avoid repeated freeze/thaw cycles)

Methodology

Quantitative Chemiluminescent Immunoassay
more

Reference Range

See report
more

Performing Laboratory

ARUP
more

New York DOH Approval Status

Yes
more

Interface Map for STR

Test Name Ordering Code Result Code Component Name LOINC Code AOE Prompt Units
Soluble Transferrin Receptor3600546
3600546Soluble Transferrin Receptor 30248-9 No

The CPT codes provided are for general informational purposes only and are based on an interpretation of AMA guidance. It is the sole responsibility of the billing party to determine CPT codes. Any questions regarding coding should be directed to the paying party.

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