Urine Supersaturation Test: Calcium Oxalate, Calcium Phosphate, Uric Acid, and Stone Risk
A urine supersaturation test estimates how strongly your urine favors crystal formation for specific stone minerals, most often calcium oxalate, calcium phosphate, and uric...
Urine Uric Acid Test for Kidney Stones: High Uric Acid, Gout, and Stone Risk
A urine uric acid test measures how much uric acid leaves the body in urine, usually over 24 hours. In kidney stone evaluation, it...
Urine Volume Test for Kidney Stones: Low Volume, Dehydration, and Stone Risk
A urine volume test measures how much urine you produce over a set period, usually 24 hours, and it is one of the most...
Acute Kidney Injury Blood Test Panel: Creatinine, BUN, Electrolytes, Urine Output, and Meaning
Acute kidney injury (AKI) is a sudden decline in kidney function that develops over hours to days. No single blood test proves AKI by...
Albumin Blood Test in Kidney Disease: Low Levels, Nutrition, Protein Loss, and Inflammation
An albumin blood test measures albumin, the most abundant protein in blood plasma. The liver makes albumin, and healthy kidneys normally keep almost all...
Basic Metabolic Panel (BMP) Test: Kidney Function, Electrolytes, Glucose, and Results
A basic metabolic panel (BMP) is a common blood test that checks eight measurements related to kidney function, electrolytes, acid-base balance, blood sugar, and...
Beta-2 Microglobulin Blood Test: High Levels, Kidney Function, and Tubular Damage
A beta-2 microglobulin (B2M or β2M) blood test measures a small protein that is continuously released by most nucleated cells. Healthy kidneys filter beta-2...
Bicarbonate Blood Test in Kidney Disease: Metabolic Acidosis, Low Levels, and CKD Meaning
A bicarbonate blood test helps show whether the body is keeping acids and bases in balance. On a routine chemistry panel, bicarbonate is usually...
Blood Urea Nitrogen (BUN) Test: Normal Range, High and Low Levels, and Kidney Health
A blood urea nitrogen (BUN) test measures the nitrogen portion of urea in the blood. Urea is a waste product made mainly in the...
BUN/Creatinine Ratio Test: High, Low, Dehydration, Kidney Function, and Meaning
The BUN/creatinine ratio compares two blood measurements that are commonly used when evaluating kidney function: blood urea nitrogen (BUN) and serum creatinine. The ratio...
Chronic Kidney Disease Blood Test Panel: eGFR, Creatinine, Cystatin C, BUN, and Monitoring
A chronic kidney disease (CKD) blood test panel is not one universal laboratory package. Instead, clinicians combine several tests to estimate kidney filtration, check...
Comprehensive Metabolic Panel (CMP) Test: Kidney, Liver, Electrolytes, Proteins, and Results
A comprehensive metabolic panel (CMP) is a group of 14 blood measurements that gives a broad snapshot of kidney function, liver-related markers, electrolytes, blood...
Creatinine Blood Test: Normal Range, High and Low Levels, and Kidney Function
A creatinine blood test measures the amount of creatinine in your bloodstream and is one of the most common ways to assess kidney filtration....
Creatinine Clearance Test: Kidney Filtration, Blood and Urine Collection, and Results
A creatinine clearance test estimates how much blood the kidneys clear of creatinine each minute by comparing creatinine in a timed urine collection with...
Cystatin C Blood Test: High Levels, eGFR, Kidney Function, and Heart Risk
A cystatin C blood test measures a small protein produced by nearly all nucleated cells and cleared from the bloodstream mainly by the kidneys....
eGFR With Cystatin C Test: Kidney Filtration, Accuracy, Creatinine Comparison, and Meaning
An eGFR with cystatin C test estimates kidney filtration using the blood level of cystatin C, either alone or together with creatinine. The combined...