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 TPR and is ordered as LAB137.

CPT Code: 84480

Electrochemiluminescence immunoassay (ECLIA)

TidalHealth Peninsula Regional - Core Laboratory: Chemistry

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).

80-200 ng/dL