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Unit Code 8724:
T4 (Thyroxine), Total Only, Serum

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Specimen Required

Draw blood in a plain, red-top 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:           NA

Hemolysis:                                          Yes (Reject if grossly hemolyzed)

Thawing:                                              Warm Reject; Cold Ok

Lipemia:                                               No

Day(s) and Time(s) Test Performed

Monday through Friday 5 a.m. - 12 a.m., Saturday 6 a.m. - 6 p.m.

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