Kidney Function Test

Fasting is typically not required for basic kidney function tests. However, if your test is part of a comprehensive metabolic panel that includes glucose testing, we may recommend an 8-12 hour fast for the most accurate results. When scheduling your visit, ask our staff about any preparation requirements specific to your testing needs.

Most kidney function test results are available the same day, often within a few hours. Our on-site laboratory capabilities allow for rapid processing of blood and urine samples. Your medical provider will review results with you during your visit or contact you promptly if you've already left the clinic.

Abnormal results can indicate various conditions ranging from temporary dehydration to chronic kidney disease. Elevated creatinine or BUN levels may suggest reduced kidney filtration, while abnormal electrolytes can indicate imbalances in kidney regulation. Our medical providers will interpret your specific results, consider your medical history, and determine whether additional testing, treatment, or specialist referral is appropriate.

Yes, certain medications including NSAIDs (ibuprofen, naproxen), some antibiotics, blood pressure medications, and diabetes drugs can affect kidney function or test results. Bring a complete list of your current medications, including over-the-counter drugs and supplements, to your visit. This helps our providers accurately interpret your results and make safe recommendations.

Testing frequency depends on your individual risk factors. According to the National Kidney Foundation, people with diabetes, high blood pressure, heart disease, or family history of kidney disease should have annual testing. Those with known kidney disease may need more frequent monitoring every 3-6 months. Our medical providers will recommend an appropriate testing schedule based on your specific situation.

Please bring your photo ID, insurance card, a list of current medications (including dosages), and any previous kidney function test results if available. If you have a history of kidney disease or related conditions, bring relevant medical records. This information helps our medical providers provide the most comprehensive evaluation possible.

Not necessarily. Many kidney function abnormalities can be managed with lifestyle modifications, medication adjustments, or treatment of underlying conditions like diabetes or hypertension. Our medical providers will determine if specialist referral to a nephrologist is needed based on your results, symptoms, and overall health status. If referral is recommended, we'll coordinate the process and provide all necessary documentation.

Yes, kidney function testing is the primary method for detecting early-stage chronic kidney disease, often before symptoms appear. The GFR calculation is particularly valuable for identifying reduced kidney function. According to the CDC, approximately 90% of people with chronic kidney disease don't know they have it, making routine testing crucial for those with risk factors. Early detection allows for interventions that can slow disease progression.