T4 Thyroxine Total Only, Serum

Centralized Core Laboratory:Chemistry

Test ID/Workstation: T4TOT MAYO

Specimen Type: Blood - Serum

Tube Type: Serum Separator Tube - Serum

Collection Volume: 2.5 mL (minimum 1.5 mL)

Cause for rejection: Grossly hemolyzed specimens will be rejected

Storage: Refrigerated

Availability: Sent to Reference Lab performed Monday through Friday 5am-12am, Saturday 6am-6pm

Methodology: Electrochemiluminescence Immunoassay

Special Instructions: Patient Prep - 12 hrs before blood test do not take multivitamins or dietary supplements containing biotin (Vit B7).

Lab/Phone: 330-543-8377

TAT: 1-3 days

Additional Info: Reference Range: See reference lab ranges on report

CPT Code: 84436

Synonyms: Syn-Thyroid
T4, Serum
Tetraiodothyronine
Thyroid Hormone
Thyroxine, Total
T4 Total Only, S
Thyroxine
Thyroxine

Requisition Form
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