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Free T4

Test Code: TD_CH138
CPT Code(s): 84439

$17

Test Details

Alternative Name(s)

Free thyroxine (free T4)
T4, free (thyroxine)
Thyroxine, free (T4)

Test Includes

Free T4

Methodology

Abbott Alinity chemiluminescent microparticle immunoassay (CMIA)

Rejection Criteria

Gross hemolysis

Reference Range(s)

0.70-1.9 ng/dL

Specimen Requirements

Preferred Specimen

Serum separator tube (SST)

Minimum Volume

0.5 mL serum

Sample Stability

6 days refrigerated

Transport Temperature

Refrigerated

Collection Instructions

Allow SST to clot in an upright position for at least 30 minutes, then centrifuge sample within 2 hours of collection. Refrigerate.

Alternative Specimen

Lithium heparin plasma
Sodium heparin plasma
EDTA

Site Links

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TRIBAL DIAGNOSTICS

3600 S. LAKESIDE DR.

OKLAHOMA CITY, OK 73179

P 405.896.2978

F 405.896.2701

Compliance

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