TFTLC – “Testosterone, Free (Dialysis) and Total, LC/MS/MS”

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Updated Test

Effective Date

06/19/2026

Included in Report

WML Test Directory Update | July 2026

Updated Test

TESTOSTERONE, FREE (DIALYSIS) AND TOTAL LC/MS/MS

Test Details

Mnemonic

TFTLC

Ordering Code

3723600

CPT-4 Codes(s)

84402, 84403

Specimen Information

Specimen Preparation

Previous:Updated To:
Centrifuge, remove serum from cells and send 1.8 mL serum in a screw capped plastic vial.Allow blood to clot at room temperature, centrifuge, remove serum from cells and send 1.8 mL serum in a screw capped plastic vial.

Alternate Specimen

Previous:Updated To:
Plasma: Sodium or lithium heparinPlasma: Sodium or lithium heparin
Serum separator tube (SST)

Rejection Criteria

Previous:Updated To:
Serum separator tube (SST), gross hemolysis, gross lipemiagross hemolysis, gross lipemia

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