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Test Code FT4 T4, Free, Serum

Performing Laboratory

Mary Washington Healthcare-Department of Pathology and Laboratory Medicine-Chemistry

Specimen Requirements

Serum

Container/Tube:  Plain, red-top tube(s) or serum gel tube(s)

Not Acceptable: Plasma

Volume:  1 mL of serum

Transport Temperature:  Refrigerate

Collection Instructions:

Note: Label specimen appropriately (serum). Turbidity may affect test results.

Reference Values

0.58-1.90 ng/dL

Day(s) Test Set Up

Monday through Sunday