Chemistry

Front 1

creatinine is formed from the

Back 1

oxidation of creatine

Front 2

creatinine is considered the substance of choice to mz endogenous real clearance because

Back 2

it is completely filtered by the glomeruli

Front 3

which statement is true about creatinine

Back 3

high serum levels results from reduced glomerular filtration rates

Front 4

which of the formula below is the correct expression of creatinine clearance

Back 4

CC = U/P x V x 1.73/A

Front 5

a sample of amniotic fluid collected for fetal lung studies from a woman w/ a pregnancy compromised by hemolytic disease of the newborn (HDN) has a creatinine of 88 mg/dL, what is the most likely cause of this result

Back 5

fluid is urine from accidental puncture of the urinary bladder

Front 6

which analyte should be reported as a ratio using creatinine concentration as a reference

Back 6

urinary microalbumin

Front 7

urea is producd from

Back 7

the catabolism of proteins & amino acids

Front 8

urea concentration is calc from the BUN by mx by a factor of

Back 8

BUN 2.14
Urea = BUN x (1/.467) = 2.14

Front 9

a patient BUN is 60 mg/dL & serum creatinine is 3.0 mg/d: the results suggest

Back 9

prerenal failure

Front 10

urinary urea mz may be used for calc of

Back 10

nitrogen balance

Front 11

BUN is determined electrochemically by coupling the urease reaction to mz of

Back 11

the time rate of increase in conductivity

Front 12

in the UV enzymatic method for BUN, the urease reaction is coupled to a second emz rtx using

Back 12

glutamate dehydrogenase

Front 13

which produce is mz in coupling step of the urease-UV method for BUN

Back 13

NAD+

Front 14

which emz defency is responsible for phenylketonuria (PKU)

Back 14

phenylalanine hydroxylase

Front 15

which of the following condtx is classified as a renal type aminoaciduria

Back 15

Fanconi's syndrome

Front 16

which aminoaciduria results in the overflow of branched chained amino acids

Back 16

maple syrup urine disease

Front 17

which of the following best describe the Guthrie test

Back 17

bioassay for PKU dependent upon the phenylalanine requirement of B. subtilis

Front 18

of the method used to measure amino acids, which is capable of mz only phenylalanine

Back 18

flurometric analysis w/ ninhydrin

Front 19

blood ammonia levels are usually mz in order to eva

Back 19

hepatic coma

Front 20

enzymatic mz of ammonia requires which of the following substrates & coemz

Back 20

a-Ketoglutarate (substrate)
NADH (coemz)

Front 21

which of the following is true about ammonia

Back 21

hepatic coma can results from Reye's syndrome

Front 22

a sample for ammonia assay is taken from an IV line that has been capped & injected w/ lithium heparin (called heparin lock), the sample is drawn in a syringe containing lithium heparin & immediately capped & iced. the plasma is separated & analyzed w/in 20 mins of collection & the results is 50 ug/dL -- higher than one mz 4 hours ago, why?

Back 22

stasis of blood in the line caused increase ammonia

Front 23

uric acid is derived from the

Back 23

catabolism of purines

Front 24

which of the following condtx is ass w/ hyperuricemia

Back 24

renal failure

Front 25

order for uric acid are legitimate stat request because

Back 25

levels above 10 mg/dL causes urinary tract calculi

Front 26

which uric acid method is ass w/ negative bias caused by reducing agents

Back 26

uricase coupled w/ the Trinder reaction