Full formMedical & Health
ALTstands forAlanine Aminotransferase
Full Form of ALT
What is ALT?
Alanine Aminotransferase (ALT) is an enzyme primarily found in the liver and, to a lesser extent, in the kidneys, heart, and muscles. It plays a key role in metabolism by helping convert alanine (an amino acid) into pyruvate, which is used for energy production. In the Indian healthcare system, ALT is most commonly measured as part of a liver function test (LFT) to assess liver health. When liver cells are damaged or inflamed, ALT leaks into the bloodstream, causing elevated levels. The test is widely used in hospitals, diagnostic labs, and clinics across India for screening hepatitis (including A, B, E), fatty liver disease, alcoholic liver injury, and drug-induced hepatotoxicity. It is also frequently ordered during routine health check-ups and pre-operative assessments. ALT is often measured alongside AST (Aspartate Aminotransferase) to form the AST/ALT ratio, which helps differentiate types of liver disease. For students preparing for NEET or AIIMS, understanding ALT as a marker of hepatocellular injury is essential, and it frequently appears in pathology and biochemistry questions.
ALT का फुल फॉर्म
एलानिन एमिनोट्रांसफरेज़
Example
The doctor advised an ALT test along with other liver enzymes to evaluate the patient's chronic hepatitis B status.
ALT — frequently asked questions
What is the full form of ALT?
ALT stands for Alanine Aminotransferase, an enzyme used as a marker for liver health in medical tests.
What is the normal range of ALT in Indian labs?
The normal range for ALT is typically 7 to 56 units per liter, but reference values may vary slightly between Indian laboratories.
Why is ALT tested along with AST?
ALT and AST are compared in a ratio (De Ritis ratio) to help differentiate between liver damage causes, such as viral hepatitis or alcoholic liver disease.