3 ml blood and 24 hrs urine sample needed
24 hrs urine volume,patients age, height  and weight required.
Understanding the Creatinine Clearance Test
What It Is: The Creatinine Clearance Test measures how well your kidneys are filtering creatinine, a waste product produced by muscle metabolism, from your blood. This test provides valuable information about kidney function and helps diagnose and monitor kidney diseases.
Why It's Important: Creatinine is a waste product that your kidneys typically filter out of your blood. Abnormal levels of creatinine could be a sign of kidney disease. The creatinine clearance test helps determine how efficiently your kidneys are working by comparing the amount of creatinine in your urine and blood.
How the Creatinine Clearance Test Works:
Sample Collection: The test involves collecting your urine over a 24-hour period and having your blood drawn. This allows healthcare providers to see how much creatinine is in a sample of your urine and blood.
Laboratory Analysis: The samples are analyzed to measure the amount of creatinine filtered by your kidneys over the 24-hour window. This measurement is used to estimate your glomerular filtration rate (GFR), which indicates how well your kidneys are filtering your blood.
Interpreting the Results:
Normal Range: The normal range for creatinine clearance is typically 90-120 milliliters per minute (mL/min) for healthy adults. However, this range can vary based on age, sex, and body size.
Low Creatinine Clearance: Indicates reduced kidney function, which may be due to kidney disease or other conditions affecting kidney health.
High Creatinine Clearance: May indicate increased kidney function, often seen in conditions like pregnancy or high protein intake.
Why Your Doctor Might Order This Test:
Diagnosing Kidney Disease: To determine if you have kidney disease or other conditions affecting kidney function.
Monitoring Kidney Function: To monitor the progression of kidney disease or the effectiveness of treatments.
Evaluating Symptoms: If you have symptoms such as fatigue, changes in urination, loss of appetite, or muscle twitches, this test can help assess the underlying cause.
Symptoms That Might Prompt This Test:
Fatigue
Changes in urination frequency or volume
Loss of appetite
Nausea
Muscle twitches