T4 (Thyroxine), Free, Serum

Methodology: Electrochemiluminescence

Specimen Requirements:
1 yellow-top SST tube (minimum: 1.0 mL of serum). Centrifuge SST 30 minutes after draw. Refrigerate specimen after collection.

Analytical Time: 1 day

Days Set Up: Monday through Sunday

CPT Information:
84439 –

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