Renal function tests

Kidney Function

Excretion of waste, maintenance of extracellular fluid volume and composition, including acid-base balance, and hormone synthesis.

Urinalysis

A laboratory test that involves analyzing urine to assess various health conditions.

Microalbuminuria

A sensitive test that detects low concentrations of albumin in urine, indicating early nephropathy.

Proteinuria

The presence of abnormal quantities of protein in urine, indicating potential kidney damage.

Creatinine

A by-product of muscle energy metabolism and the most reliable test of glomerular function.

Estimated GFR (eGFR)

An estimate of the glomerular filtration rate derived from plasma creatinine concentrations.

Cystatin C

A small protein that reflects the GFR more accurately than creatinine, influenced less by muscle mass.

Beta 2 microglobulin

A protein freely filtered by the glomerulus; a sensitive indicator of renal tubular disease.

Glycosuria

Presence of glucose in the urine, indicating potential renal tubular malfunction.

Renal Tubular Function Tests

Tests that assess the function of renal tubules, including glycosuria and amino aciduria.

Glomerular Proteinuria

Proteinuria caused by increased glomerular permeability, typically seen in chronic kidney disease.

Creatinine Clearance Formula

A formula (Cx = Ux * V / P) used to estimate the glomerular filtration rate based on urinary creatinine.

Overflow Proteinuria

Proteinuria due to excess low molecular weight proteins in plasma filtered beyond tubular reabsorption.

Acute Kidney Injury (AKI)

A rapid decline in kidney function, affecting the accuracy of estimated GFR.

Chronic Kidney Disease (CKD)

A long-term kidney condition that can be assessed through GFR measurements.

Renal Function Tests

Tests designed to provide insights into kidney health and function.