A nucleic acid test (NAT) is a technique used to detect genetic material (DNA or RNA) in analysed samples

Blood groups explained, and how your blood works to provide life to your entire body. Understand donor compatibility and classification.

Endoscopic retrograde cholangiopancreatography (ERCP) is a procedure that combines upper gastrointestinal (GI) endoscopy and x-rays to treat problems of the bile and pancreatic ducts.

More attention is given to systolic blood pressure (the first number) as a major risk factor for cardiovascular disease for people over 50.