Thiopurine methyltransferase (TPMT) is an enzyme that breaks down a class of drugs called thiopurines. TPMT tests are used to identify people at risk of developing severe side effects from thiopurine treatment.
Sputum is a thick mucus produced in the lungs. A sputum culture test checks for infections that can cause pneumonia, tuberculosis, and other lung conditions.
Rheumatoid factor testing can identify if you have RF autoantibodies, which attack the body’s healthy cells and tissues. It is used to diagnose autoimmune diseases like rheumatoid arthritis and Sjögren’s syndrome.
A pregnenolone test is usually used along with other tests involving hormones to diagnose rare forms of congenital adrenal hyperplasia (CAH) in infants.
