Test Code LAB126 T4 (Thyroxine), Total

Intended Use

Used in the diagnosis of thyroid disorders

Chemiluminescent Immunoenzymatic Assay

RCH

Preferred: Plasma (heparinized)

Container/Tube: Lt green/Mint top (lithium heparin) tube

Acceptable: Serum

Container: Plain, red-top or gold, serum gel tube

Specimen Volume: 1.0 mL (minimum Volume .01mL)

Collection Instructions: Forward promptly.

Ambient: 8 hours

Refrigerated (preferred): 24 hours

Frozen (< -20C): > 24 hours or one thaw cycle

Monday through Sunday

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