Smooth muscle antibodies
| Category | Immunology |
|---|---|
| Test background |
Smooth muscle antibodies at a high titre are found in around 90 % of patients with type 1 autoimmune hepatitis. These antibodies occur in 5-15 % of normal subjects at low titre and can be triggered by infection. |
| Clinical Indications |
Differential diagnosis of chronic hepatitis. |
| Reference range | Negative |
| Sample & container required | RST (rust top) |
| Sample volume | 5-10 mL (1 mL serum) |
| Turnaround time | 4 days |
| Notes | This test is currently unaccredited due to a recent change in platform. |