Thyroid Stimulating Hormone (TSH)
Code
5945
Principle
Human thyroid-stimulating hormone is a glycoprotein hormone consisting of two noncovalently-bound subunits: an α subunit, which is nearly identical to the α subunits of human luteinizing hormone (hLH), human follicle-stimulating hormone (hFSH), and human chorionic gonadotropin (hCG), and a β subunit, which is responsible for immunological and biological specificity.
Preanalytical
1 mL Serum Refrigerated
Turn Around Time
1 day
Methodology
Chemiluminescent immunoassay (CLIA)
Limitations
Patients who have been regularly exposed to animals or have received immunotherapy or diagnostic procedures utilizing immunoglobulins or immunoglobulin fragments may produce antibodies, e.g. HAMA, that interfere with immunoassays.