Biotin, commonly found in hair, skin and nail supplements and multivitamins, may interfere with assay. It is recommended that patients abstain from any biotin containing supplement for 12 - 24 hours prior to blood draw.
Immediately following collection, thoroughly mix sample by gently inverting 5 times
Lt green plasma separator (PST)
Red/grey serum separator (SST) vial/tube, 10 mL
Lt green/lavender:
Immediately following collection, mix by inverting 8 - 10 times to prevent clotting
Lt green/lavender:
Red:
False bottom plasma/serum transport vial/tube (AHL)
Frozen (preferred) - 30 days
Freeze/thaw cycles - stable x1
Refrigerated - 48 hours
Ambient - 8 hours
Immunoenzymatic Assay
Thyroglobulin tumor marker:
Athyrotic: <0.1 ng/mL
Intact thyroid: ≤ 33 ng/mL
Thyroglobulin Ab: 1.59 - 50.03 ng/mL