Which laboratory results would the nurse monitor to best determine a patients kidney function?
Having a test can be worrying but knowing what to expect and being prepared can help. Here are the answers to some common questions people ask about kidney function blood tests. Show
On this page, you can find the following information:
What is a kidney function blood test?A kidney function blood test usually measures the level of the waste product creatinine and certain dissolved salts (electrolytes) in your blood. The test is done to check for a number of aspects of kidney function.
In some cases urea and uric acid are also tested which are other waste products.
A urine test is sometimes done to check for excess protein leaking from your urine. Albumin is a type of protein and a high ratio indicates that your kidneys are leaking protein. This can be elevated in certain conditions such as kidney damage from diabetes mellitus and pre-eclampsia in pregnancy. Why would I need a kidney function test?A kidney function test may be requested as a routine blood test to find out about your general health. It is also requested for a variety of other more specific situations. It may be done to:
Chronic kidney disease is increasingly common as you get older and doesn't have symptoms in the early stages. Therefore a kidney function test at various stages can be helpful to find problems sooner. Read more about chronic kidney disease. How do I prepare for a kidney function test?No preparation is needed and you can have this blood test at any time of the day. The urine albumin or protein creatinine ratio test is best done in the early morning if possible. What does the test involve?A blood sample taken by a needle placed in a vein in your arm. An elastic band is wrapped around your upper arm. It may feel tight. You may feel nothing at all from the needle, or you may feel a quick sting or pinch. The blood sample is collected in a tube, which is sent to the laboratory for analysis. What do my results mean?Interpreting blood test results can be difficult. Your doctor or nurse will contact you if there is anything that needs discussing or if further action is needed. A low eGFR suggests impaired kidney function. This may be due to acute or chronic kidney disease. Some of the causes of reduced kidney function include:
Learn moreThe following is further reading that gives you more information on kidney function tests. Be aware that websites from other countries may contain information that differs from New Zealand recommendations. Blood test safety information Labtests NZ Which laboratory test would the nurse monitor to best determine a patient's kidney function?Blood test for GFR
Your health care provider will use a blood test to check your kidney function. The results of the test mean the following: a GFR of 60 or more is in the normal range.
What is the best measure for the nurse to use to determine a patient's kidney function?GFR. GFR (glomerular filtration rate) is equal to the total of the filtration rates of the functioning nephrons in the kidney. GFR is considered the optimal way to measure kidney function, which in conjunction with albuminuria, can help determine the extent of CKD in an individual.
What is the first preferred diagnostic test for a patient suspected to have kidney tumors?Practice Essentials. The preferred method of imaging renal cell carcinomas is dedicated renal computed tomography (CT). In most cases, this single examination can detect and stage RCC and provide information for surgical planning.
What question does the nurse ask to determine hesitancy during urination?Ask the patient the following question related to dysuria.
How long have you had the pressure, pain or burning sensation? Do you have this pressure, pain, or burning sensation each time you urinate? Does the pressure, pain, or burning occur before, during or after urination?
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