What Does a Liver Function Test (LFT) Measure?A Liver Function Test (LFT) measures the levels of various enzymes, proteins, and substances in the blood that indicate liver health. These include enzymes like alanine aminotransferase (ALT) and aspartate aminotransferase (AST), which indicate liver damage, and bilirubin levels, which reflect liver function. Elevated levels can suggest liver inflammation, damage, or disease, while lower levels might indicate improved liver health or recovery. Understanding these results helps doctors diagnose liver conditions early and monitor treatment effectiveness.

What Do Urea and Electrolytes Indicate About Kidney Health?Urea and electrolyte tests are essential tools in evaluating kidney function. Urea is a waste product formed in the liver from protein breakdown, and it is normally filtered by the kidneys. Electrolytes, such as sodium, potassium, and chloride, help regulate key bodily functions like fluid balance and nerve signaling. Abnormal levels of urea or electrolytes can indicate kidney dysfunction, dehydration, or other systemic issues. Regular monitoring of these levels provides valuable insights into kidney health and overall body balance.

What Does a Serum Urea Level Indicate?The serum urea blood test is a key indicator of how well your kidneys are functioning. Urea is a waste product formed from the breakdown of proteins in the liver, which is normally filtered out of the blood by the kidneys. High levels of urea in the blood can indicate that the kidneys may not be functioning properly. However, elevated levels can also be influenced by dehydration, a high-protein diet, or certain medications. Normal ranges for serum urea levels typically fall between 2.5 to 7.1 mmol/L, depending on the laboratory standards.

What Does the ALT Blood Test Measure?The ALT (alanine aminotransferase) blood test measures the levels of ALT enzyme in your blood. ALT is primarily found in the liver and plays a role in converting proteins into energy. Elevated ALT levels can indicate liver damage or disease, as the enzyme is released into the bloodstream when liver cells are damaged. Conditions such as hepatitis, fatty liver disease, or alcohol-related liver injury often cause elevated ALT levels. Regular monitoring helps assess liver health and guide necessary interventions.