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Kidney/Renal function tests

Kidney function tests measure how efficiently your kidneys are working. Most of these tests measure glomerular filtration rate (GFR). GFR assesses how efficiently your kidneys clear waste from your system.

A kidney test may involve a blood test, urine sample or both. You get your test results the same day or within a few days depending on the specific test required by the medical personnel

Kidney function tests include;

  • Blood urea nitrogen (BUN) measures nitrogen (made from protein breakdown) in your blood.
  • Estimated GFR (eGFR) calculates filtration rates based on your protein levels, age, gender, size and race.
  • Serum creatinine looks for the buildup of creatinine, a waste product from muscle tissue breakdown.

What tests are used to diagnose diabetes

You can  decide to take one or more of the following blood tests to confirm the diagnosis

Random blood sugar test

This measures your blood sugar at the time you’re tested. You can take this test at any time and don’t need to fast (not eat) first. A blood sugar level of 200 mg/dL or higher indicates you have diabetes.

Fasting blood sugar test

This measures your blood sugar after an overnight fast (not eating). A fasting blood sugar level of 99 mg/dL or lower is normal, 100 to 125 mg/dL indicates you have prediabetes, and 126 mg/dL or higher indicates you have diabetes.

Glucose tolerance test

This measures your blood sugar before and after you drink a liquid that contains glucose. You’ll fast (not eat) overnight before the test and have your blood drawn to determine your fasting blood sugar level. Then you’ll drink the liquid and have your blood sugar level checked 1 hour, 2 hours, and possibly 3 hours afterward. At 2 hours, a blood sugar level of 140 mg/dL or lower is considered normal, 140 to 199 mg/dL indicates you have prediabetes, and 200 mg/dL or higher indicates you have diabetes.

Gestational diabetes tests

Gestational diabetes is diagnosed using blood tests. You’ll probably be tested between 24 and 28 weeks of pregnancy. If your risk is higher for getting gestational diabetes (due to having more risk factors), your doctor may test you earlier. Blood sugar that’s higher than normal early in your pregnancy may indicate you have type 1 or type 2 diabetes rather than gestational diabetes.

Why do a kidney function test?

Some conditions, such as diabetes or high blood pressure (hypertension), affect how well the kidneys work. If you have one of these conditions, you may  need a kidney function test to help you monitor the symptoms that indicate possible kidney problems.

These symptoms include
  • Blood in your urine (hematuria).
  • Painful urination (dysuria).
  • Frequent urge to urinate.
  • Problems with starting to pee.