Parathyroid Hormone (PTH)

Code

4710

Principle

PTH is a single chain polypeptide  produced by the parathyroid gland. Intact PTH1-84 is secreted into the blood stream and undergoes extensive proteolytic modifications. In contrast to its degradation products, the concentration of intact PTH is relatively independent of glomerular filtration rate and reflects the biologically active portion of the hormone.

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.