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Unit Code 200050:
T4 (Thyroxine), Free, Serum

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Specimen Required

Draw blood in a plain, red-top tube(s) or a serum gel tube(s).

Spin down and send 0.5 mL of serum refrigerated.

Transport Temperature

Refrig\Frozen OK\Ambient NO

Reject Due To

Specimens Other Than:                 Serum

Anticoagulants Other Than:           N/A

Hemolysis:                                          Yes, if Gross

Thawing:                                              Warm Reject;Cold OK    

Lipemia:                                               No

Day(s) and Time(s) Test Performed

Monday through Friday, Sunday; 3rd shift

Key