Parathyroid antibodies
| Category | Immunology |
|---|---|
| Test background |
Patients with anti-parathyroid hormone (PTH) antibodies, present with unexplained clinical hypoparathyroidism, but with normal or raised levels of PTH. Parathyroid antibodies are found in around 35% of patients with idiopathic hypoparathyroidism. They are also found in around 5% of healthy controls. |
| Clinical Indications |
Suspected autoimmune hypoparathyroidism. |
| Reference range | Negative |
| Sample & container required | Serum (RST rust top) |
| Sample volume | 5-10 mL blood (1 mL serum) |
| Turnaround time | 28 days |
| Notes | Not currently performed in house; this test is referred to the Protein Reference Unit (PRU), Sheffield. |