Creatinine, Uric Acid, BUN, and Ammonia

what is the formula for creatinine clearance

(urine creatinine x volume (mL)) / (plasma creatinine x 1440)

what non-protein nitrogen compound is found in the highest concentration

urea

what conditions will urea be increased

dehydration, kidney disease, increased protein intake

what is the normal BUN to creatinine ratio

10:1-20:1

when will the BUN ratio be decreased

liver disease

range: BUN

6-20mg/dL

what does an increase in uric acid indicate

gout

list the non protein nitrogens

urea, creatinine, uric acid and ammonia

what is the end product of purine metabolism

uric acid

what waste product of protein and amino acid metabolism does the liver convert into urea

ammonia

what condition will ammonia be increased

end-stage cirrhosis

what is measured to assess renal function

creatinine clearance/ glomerular filtration rate

what is the most common method used to measure creatinine

jaffe’s reaction

all non protein nitrogens will be ______ in renal impairment

increased

what effect is seen on creatinine if centrifiguation is delayed

increase in creatinine