Flashcards in Biochemical measurements Deck (16):
What is the best substance to measure GFR?
What is the best endogenous substance to measure GFR?
What is clearance?
The volume of plasma that is theoretically cleared of a substance per minute
What is a better measurment than serum creatinine?
What information do you need to calculate an estimated GFR?
Is eGFR more reliable at lower of higher GFR?
Lower. Becomes less accurate above 60
If it is essential to get an accurate assessment of GFR what test is done?
What test is used now to calculate eGFR?
4 variable MDRD
What protein levels in the urine suggest significant glomerular damage?
What tests are useful in measuring proteinuria?
24 hour collection
What does microalbuminuria mean?
Excretion of abnormally high quantities of albumin but not high enough to sppear on a dipstick
What patients get routinely tested for microalbuminuria?
What biochemical sign is the earliest marker of diabetic nephropathy?
A patients Urine:Serum osmolality is 1:1. What does this mean?
Intrinsic renal damage (tubules not working)
In the urinary sodium high or low in intrinsic renal damage?