Specimen must arrive within 2 hours of draw.
Container/Tube: Serum gel tube
Specimen Volume: 5 mL of serum
Transport Temperature: Ambient
Collection Instructions: Allow specimen to clot for 30 minutes. Spin specimen in centrifuge. If there is a delay in transport of ≥2 hours, send specimen refrigerated.
Chemiluminescence Immunoassay
Includes thyroid-stimulating hormone - sensitive (s-TSH) and T4 (thyroxine), free.
s-TSH: 0.465-4.680 µIU/mL
T4, free: 0.78-2.19 ng/mL
Monday through Sunday
84439-T4, free
84443-S-TSH