Thyroglobulin

Source	Serum
Mnemonic	THYRO
Specimen Requirements	1 x 5 mL light green (mint) top PST tube. Gold top SST tube and lavender top EDTA tube also acceptable. 1.0 mL plasma or serum Minimum Blood Volume for Patients less than 45 kg (100 lb) Including Neonates and Pediatrics
Specimen Handling	PSC and RRL: Centrifuge and pour off. Extra-regional: Centrifuge, pour off and freeze plasma/serum prior to transport to DSC. DSC: Freeze plasma/serum
Additional Information	For each Thyroglobulin order, PathNet will also order an anti-TG. Anti-TG antibodies are present in 10-30% of samples, and will affect measurements of Thyroglobulin. Thyroglobulin is a tumor marker.
Testing Location	Immunochemistry
Testing Frequency	Weekly
Alternate Name(s)
Reference Interval	0 - 50 mg/L

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