Kidney Function (BUN & Creatinine)

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The BUN and Creatinine test assesses kidney function by measuring blood urea nitrogen and creatinine levels. It helps detect kidney disorders and monitor overall kidney health.

Quick facts

Sample type

Blood (serum)

Turnaround

2–4 business days

Fasting

No Fasting Required

Doctor’s order included

Licensed physician review and requisition included with every test.

Kidney Function (BUN & Creatinine)

  • General Health & Wellness
  • Diabetes & Blood Sugar
  • Heart Health
  • Metabolic Health
  • Cpt Codes

      what is Kidney Function (BUN & Creatinine) and why is it important?

      The BUN and Creatinine test assesses kidney function by measuring blood urea nitrogen and creatinine levels. It helps detect kidney disorders and monitor overall kidney health.

      Consider taking this test if you are experiencing symptoms such as:

      • Unexplained fatigue or weakness.
      • Swelling in your legs, ankles, or feet.
      • Changes in urination patterns, such as more frequent urination, especially at night.
      • Muscle cramps or twitching.
      • Persistent nausea, vomiting, or loss of appetite.
      • If your healthcare provider suspects kidney dysfunction based on other health conditions or routine physical exams.

      This test is particularly beneficial for:

      • Individuals with chronic conditions such as diabetes, high blood pressure, or heart disease, as these can impact kidney function.
      • Those taking medications known to affect kidney health, allowing for proactive monitoring.
      • People with a family history of kidney disease or kidney failure.
      • Anyone experiencing symptoms that might suggest kidney issues, or those seeking a general wellness check-up to assess organ health.
      • Older adults, as kidney function can naturally decline with age.

      This test is commonly used as a primary indicator in the diagnosis and monitoring of various conditions affecting kidney health, including:

      • Chronic Kidney Disease (CKD): Helps stage and monitor the progression of kidney damage over time.
      • Acute Kidney Injury (AKI): Essential for identifying sudden declines in kidney function, often due to dehydration, infection, or medication side effects.
      • Diabetes-related Nephropathy: Crucial for individuals with diabetes to detect early kidney damage, as diabetes is a leading cause of kidney disease.
      • Hypertensive Nephropathy: Used to assess kidney impact in individuals with high blood pressure, another significant risk factor for kidney damage.
      • Glomerulonephritis and other inflammatory kidney diseases: Aids in the assessment of kidney inflammation and damage.
      • Urinary Tract Obstruction: Can indicate kidney strain or damage from blockages in the urinary system.
      • Monitoring medication side effects: Important for patients on drugs that can potentially harm the kidneys.
      • Overall Health Screenings: A routine component of general health check-ups to ensure optimal organ function.

      Caution

      Always consult with a qualified healthcare provider to interpret your test results and to discuss any health concerns or potential treatment options. This test provides valuable information, but it should be considered within the context of your overall health and medical history.

      How It Works?

      1
      Add Your Test to Cart and Check out

      once Test Order is received, Our physicians will review your request and email you the easy-to-follow requisition form.


      2
      Locate and Visit Your Nearest Laboratory

      Find the closest partner location—most are within 2–3 miles—and drop by for a quick, no‑appointment blood draw.


      3
      Get your Results Online

      Once your sample is processed, we’ll send your report straight to your inbox within 1–3 business days. Just click the link to view your results anytime.


      4
      Book a Optional Consult

      Have Questions about results? Book a phone or video visit with one of our doctors. They’ll walk you through your report, explain any findings, and recommend next steps