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Author Topic: Bun test  (Read 1975 times)

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Offline surf18

  • Member
  • Posts: 525
Bun test
« on: March 10, 2011, 02:51:45 PM »
I believe is a kidney function test
My bun test has increased from 21,24, to 29 test in feb
Dr didn't mention it. Cause for concern? I'm on truvada
Creatine test normal

Offline newt

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  • Posts: 3,877
  • the one and original newt
Re: Bun test
« Reply #1 on: March 10, 2011, 03:33:56 PM »
Hmm...

BUN = blood urea nitrogen

This is a blood creatinine: urea nitrogen ratio and 20:1 would be the top of normal range, unless you's older in which case it might be higher. << how much older is a moot point since the reference ranges are usually set on students etc (for $15 a throw).

An increased ratio may be from:

- decrease in the flow of blood to the kidneys, such as with congestive heart failure or dehydration << common dehydration.
- increased protein in your diet, including the day before/day of the test.
- gastrointestinal bleeding << you'd know about this by other means.
- being older.

The test on it's own is not conclusive and means further investigation is needed. It is variable.

The kingpin of kidney tests is glomerular filtration rate, or, a close second, estimated glomerular filtration rate. Combined with other tests, eg C reactive protein, liver function, blood creatinine, urine protein and urine glucose etc, this can sort out if it is a kidney problem (in which case attention to tenofovir/Truvada dose or a switch may be sensible) or sommat else.

Hope this helps.

- matt
"The object is to be a well patient, not a good patient"

Offline surf18

  • Member
  • Posts: 525
Re: Bun test
« Reply #2 on: March 10, 2011, 10:57:23 PM »
Thank you!

 


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