Collection: Kidney & Urinary Blood Tests

Estimated glomerular filtration rate calculates how well your kidneys are filtering waste from your blood based on your creatinine level, age, and sex. A normal eGFR is above 60, with values above 90 considered optimal. Declining eGFR over time is a clinically significant finding even within the normal range.

Both are markers of kidney filtration efficiency, but cystatin C is more accurate because its levels are not influenced by muscle mass, diet, or exercise. Cystatin C is particularly useful for detecting early kidney function decline in athletes, older adults, or people with low muscle mass.

Diabetes and high blood pressure are responsible for approximately two-thirds of all chronic kidney disease cases. Other causes include long-term NSAID use, recurrent kidney infections, autoimmune conditions, and genetic disorders. Early identification and management of these conditions is the most effective preventive strategy.

A standard electrolyte panel includes sodium, potassium, bicarbonate, and chloride. Potassium is particularly important as the kidneys regulate it — elevated potassium can be life-threatening in advanced kidney disease. Phosphate and calcium levels are also disrupted as kidney function declines.