What to Look for in a Blood Test for Kidney Disease
Kidney Function Tests
Kidney function tests mensurate how efficiently your kidneys are working. Most of these tests cheque how well your kidneys clear waste matter from your arrangement. A kidney test may involve a blood exam, 24-hour urine sample or both. Yous usually take your test results the same 24-hour interval or within a few days.
Overview
What are kidney function tests?
Kidney function tests are urine or blood tests that evaluate how well your kidneys are working. Nearly of these tests measure glomerular filtration rate (GFR). GFR assesses how efficiently your kidneys clear waste matter from your system.
What do your kidneys do?
Your kidneys are function of your urinary system. The two kidneys sit in the back of your abdomen just below your ribcage. They assist your torso filter waste product materials and miscarry them as urine. Your kidneys are also vital for producing:
- Hormones that maintain blood pressure.
- Carmine blood cells, which carry oxygen throughout your torso.
- Vitamin D, which maintains bone and muscle health.
Why might I need a kidney function test?
Some conditions, such as diabetes or loftier blood pressure level (hypertension), bear upon how well the kidneys work. If you have ane of these conditions, your healthcare provider may utilize kidney function tests to help monitor these conditions.
You may too need a kidney office test if you take symptoms that indicate possible kidney bug. These symptoms might include:
- Blood in your urine (hematuria).
- Painful urination (dysuria).
- Frequent urge to urinate.
- Bug with starting to pee.
What are the types of kidney function tests?
Your healthcare provider may social club one or a few different types of kidney function tests. Yous may have blood tests for kidney role, such as:
- 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.
Your healthcare provider may besides apply 24-hr urine tests, including:
- Microalbuminuria looks for a specific protein called albumin.
- Urinalysis evaluates your urine for claret, proteins and role.
Test Details
What happens during a kidney urine examination?
Y'all complete 24-hour urine tests at home. For a 24-hr urine examination, your provider will give you a container to collect urine. On the day of the examination:
- Urinate into the toilet as usual after yous first wake up.
- For the residual of the twenty-four hours, urinate into the container.
- On day two, urinate into the container when y'all first wake up.
- Consummate the examination past dropping your sample off at the healthcare provider'due south office or laboratory.
What happens during a kidney claret test?
For a kidney blood test, you visit your provider'south office or laboratory to give a blood sample. A technician uses a small-scale needle and exam tube to collect a claret sample.
What tin can I expect after a kidney test?
Kidney part tests are typically simple and cause no side furnishings. After blood tests, some people experience:
- Bruising.
- Dizziness.
- Fatigue.
Blood tests and urine tests typically don't cause long-term pain or complications. Call your healthcare provider if you have pain, fatigue, or other symptoms that don't go abroad.
Results and Follow-Up
When should I know the results of a kidney function exam?
How soon yous receive test results can vary. Sometimes, your provider discusses the results of your test on the aforementioned solar day. Or your provider may send the test to a lab, and you receive results in a few days.
What practise the results of my kidney part test hateful?
Kidney office test results tin can tell you whether your kidneys are functioning typically or not. Most part tests wait for two measurements:
- GFR of less than lx could indicate kidney illness.
- Urine albumin-to-creatinine ratio (UACR) of more than 30 milligrams per gram could be a warning sign of kidney disease.
What if my test results show early kidney disease?
If a test shows irregular results, your healthcare provider will follow up with you well-nigh treatment options. You may receive medications to control claret force per unit area. Or you may follow up with a nephrologist (a doctor who specializes in the kidneys).
If your examination results are atypical, your provider volition likely society more frequent kidney office tests in the hereafter. Regular testing helps your provider track your health and any underlying conditions.
A note from Cleveland Clinic
Kidney office tests check how well your kidneys are working. Healthy kidneys assist with removing waste from your body. Conditions such as diabetes or high claret force per unit area can affect your kidney function. Y'all may as well need a kidney role test to diagnose or rule out an infection. Kidney function tests include blood tests or urine tests. Typically, your provider gives you your results the same day or within a few days.
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Source: https://my.clevelandclinic.org/health/diagnostics/21659-kidney-function-tests