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Test Code LAB136 TOTAL T3 (THYROID HORMONE)

Important Note

This test is not Reverse T3 or Free T3.

Reverse T3 is sent to Mayo and is ordered as a LAB3488.

Free T3 is done at PRMC and is ordered as LAB137.

Additional Codes

CPT Code: 84480

Methodology

Microparticle Enzyme Immunoassay (MEIA) Abbott AxSYM

Performing Laboratory

Peninsula Regional Medical Center - Chemistry

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma

Draw blood in a green-top (lithium heparin) tube. Spin down and send 2 mL of lithium heparin plasma.
Note: 1. Indicate plasma.

2. Label specimen appropriately (plasma).

 

Serum

Draw blood in a gold-top serum gel tube. Spin down and send 2 mL of serum.

Note: 1. Indicate serum.

2. Label specimen appropriately (serum).

Reference Values

Males

1 day: 60-160 ng/dL

1 month: 70-220 ng/dL

9 years: 160-210 ng/dL

11 years: 140-230 ng/dL

15 years: 140-210 ng/dL

18 years: 87-178 ng/dL

Females

1 day: 60-180 ng/dL

1 month: 90-200 ng/dL

9 years: 150-240 ng/dL

11 years: 140-220 ng/dL

15 years: 140-220 ng/dL

18 years: 87-178 ng/dL