Doctor insights on: Kidney function blood test fasting

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Kidney (Definition)

The kidneys are paired organs that lie on either side of the vertebral column. Part of their critical functions include the excretion of urine and removal of nitrogenous wastes products from the blood. They regulate acid-base, electrolyte, fluid balance and blood pressure. Through hormonal signals, the kidneys control the ...Read more


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In the kidney function blood test can THC show up?

In the kidney function blood test can THC show up?

See below: Usually it is a urine test. One would have to specifically test for thc...It is not part of the kidney function panel. ...Read more

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Can a kidney function blood test determine whether I have stones or kidney damage. I have frequent pain on my right side front side & back constantly?

Can a kidney function blood test determine whether I have stones or kidney damage. I have frequent pain on my right side front side & back constantly?

Blood test & imaging: A blood test will tell if your renal function is impaired but not diagnose renal stone. Urine examination may help, but imaging studies are more suited for detecting renal stones. ...Read more

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What blood tests test kidney function? What kind of blood test do I need to show how well my kidneys are working?

What blood tests test kidney function? What kind of blood test do I need to show how well my kidneys are working?

BUN and creatinine: Blood urea nitrogen (BUN) and a serum creatinine are used to measure how effectively your kidneys are screening out those waste products from your blood. They are a routine test almost universally done with blood chemistries. ...Read more

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Second blood test done for kidney function Creatinine to be tested again. Result borderline what does this mean as doc wants another test in 1month?

Second blood test done for kidney function Creatinine to be tested again. Result borderline what does this mean as doc wants another test in 1month?

Just follow it: Anything from having had an old kidney infection to taking ibuprofen to having some damage from hypertension can raise creatinine. If you're a fitness buff, you can run a bit high for a woman. Best to get a few baseline creatinines while you're still young. Best wishes. ...Read more

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Blood test results showed elevated liver enzymes and elevated kidney function. What does this mean?

Blood test results showed elevated liver enzymes and elevated kidney function. What does this mean?

Need for evaluation: It is not feasible to provide a meaningful opinion without taking a history, physical examination, looking at the actual lab results and may be additional studies. Lab results need to be interpreted in the clinical context and the doctor who ordered the tests is in the best position to do that. ...Read more

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I just started blood pressure meds but don't want blood test as fear kidney function test may include liver test and rather not know is that ok?

I just started blood pressure meds but don't want blood test as fear kidney function test may include liver test and rather not know is that ok?

Here are some...: Hi! Carolynbabe, Fearing the unknown would not help. The first step to help improve life & health is to understand & accept the available truth & facts of life. To start long-term Rx for high BP, it's good idea to get a baseline lab for renal and liver function, lytes, CBC, etc. Since drugs used all go through liver... So, ask your Doc timely if concern arises. ...Read more

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Took Flonase & clariten long term. Stopped abruptly due to extreme dryness in nasal passages. Blood test showed lower kidney function. Related to meds?

Took Flonase & clariten long term. Stopped abruptly due to extreme dryness in nasal passages. Blood test showed lower kidney function. Related to meds?

No: Those medications should not affect renal function. They are metabolized by enzymes in the liver. Thus, not typically associated with any affect on your kidneys. Discuss with your doctor other possible causes for decreased kidney function. ...Read more

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Causes of ongoing left flank pain if kidney function is normal according to urine/blood test?

Causes of ongoing left flank pain if kidney function is normal according to urine/blood test?

Many: The causes are numerous and depend on associated symptoms. Tenderness can be due to ribs which are in the area. Other symptoms can be due to internal organs on that side. Back pain from facet joints can cause pain in that area but less likely in young aside from someone with prior athletic history or injuries or accidents. Would discuss with primary doctor. ...Read more

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Urine test protein 2+ for the past 2 visits. Blood test creatinine etc kidney function is ok. What causes protein in urine?

Urine test protein 2+ for the past 2 visits. Blood test creatinine etc kidney function is ok. What causes protein in urine?

Several causes: Your physician would do well to rule out orthostatic protenuria, the most common cause and utterly harmless. It's ruled out, then begin a workup. There are a host of causes. ...Read more

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Does a blood test for renal function need fasting beforehand?

Kidney blood test: No, if you are checking for creatinine and BUN levels, you do not to be fasting before your blood sample is taken. ...Read more

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Can not fasting before a blood test show results of acute kidney failure & I'm scheduled for another test that I will fast for amen?

Can not fasting before a blood test show results of acute kidney failure & I'm scheduled for another test that I will fast for amen?

No: Your kidney failure may be something as simple as the transient effect of a painkiller such as ibuprofen, or something as troublesome as interstitial nephritis due to the medicine you are taking for your mood. Or there may be a lab error. Hoping you get a good outcome. ...Read more

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I have had routine blood test and my kidney one is a little low, what does this meen.

I have had routine blood test and my kidney one is a little low, what does this meen.

What test?: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, What test was it and what was the result? If creatinine was low, that is not an indication of kidney disease.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex.
Get HPV vaccine. ...Read more

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My wife has pain in her kidneys, full blood test done but now they want to test it again what are they looking for.

My wife has pain in her kidneys, full blood test done but now they want to test it again what are they looking for.

Double checking?: It's not uncommon for doctors to repeat a test during work up or follow up. It might be helpful to
ask this question directly and obtain a more informed answer from the them. Without knowing the details of what is wrong with your wife, it will be very difficult to answer correctly. ...Read more

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My husband has had two blood test taken, both indicated his kidney markers are significantly elevated. What does this mean?

More work-up needed: Any medical test needs interpretation together with a patient's history, examination and imaging. Abnormal blood tests for kidney function suggest a need for further explanation of why. Reasons may include problems before blood flow gets to the kidneys (like narrowed arteries), problems with the kidneys (kidney disease) or after the kidneys (like prostate enlargement). Don't panic, get evaluated. ...Read more

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Can someone have normal blood test and urine test and still have kidney issues?

Can someone have normal blood test and urine test and still have kidney issues?

Rarely: Although it is uncommon one can have her reduced level of kidney function with normal blood and urine test. This is most common in older patients with decreased muscle mass and also with people of small stature or small frame. Their kidney function is better assessed by doing a 24 hour urine collection protein and creatinine clearance. Imaging test are also useful such as kidney ultrasound ...Read more

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I have a 99 efgr rating on a kidney blood test. What does this mean for me. Do I have kidney problems and what over-the-counter meds can I take?

I have a 99 efgr rating on a kidney blood test. What does this mean for me. Do I have kidney problems and what over-the-counter meds can I take?

Normal: I am assuming the estimated GFR is 99 ml/min. While I join other pathologists and nephrologists who has little use for subscientific estimates of glomerular filtration rates from spot creatinines, this suggests to me that your serum creatinine was normal, and that your personal physician is not concerned either. I'm sorry you got a scare and glad you're taking a proactive approach. ...Read more

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In 2 years my kidney level in blood test went from 14 to 26 and my glucose is double the norm. How concerned should I be and with my preconditions?

In 2 years my kidney level in blood test went from 14 to 26 and my glucose is double the norm. How concerned should I be and with my preconditions?

Need to take care: Blood pressure, diabetes are main culprits in genesis of chronic renal failure, both are controllable and treatable, possible to prevent future kidney failure. You must see your doctor take care of those two conditions you have right away. ...Read more