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ASCP (urinalysis & body fluids) EXAM 100% CORRECT.
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ASCP (urinalysis & body fluids) EXAM 100% CORRECT.
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ASCP (urinalysis & body fluids ) EXAM 100% CORRECT . After reviewing a 24 hour urine for quantitative total protein analysis, the technician must first ANSWER -measure the total volume False results in urobilinogen testing may occur if the urine specimen is ANSWER -exposed to light A clean catch urine is submitted to the laboratory for routine urinalysis and culture. The routine urinalysis is done first, and 3 hours later, the specimen is sent to the microbiology department for culture. The specimen should: ANSWER -be rejected du e to time delay with time delay, bacteria is multiplying which is not giving an accurate reading for when culture is done Which of the following urine results is most apt to be changed by prolonged exposure to light ANSWER -bilirubin Urine samples should be examined within 1 hour of voiding because ANSWER -bacterial contamination will cause alkalinization of the urine The following results were obtained on a urine specimen at 8 AM pH 5.5 protein 2+ glucose 3+ ketones 3+ blood negative bilirubin positive nitrite positive If this urine specimen was stored uncapped at 5C without preservation and retested at 2PM, which of the following test results would be changed due to these storage conditions ANSWER -ketones being uncapped can cause the ketones to evaporate A urine specimen comes to the laboratory 7 hours after it is obtained. It is acceptable for culture only if the specimen has been stored: ANSWER -at 4-7C Which of the following would be affected by allowing a urine specimen to remain at room temperature for 3 hours before analysis ANSWER -pH A 24 hour urine from a man who had no evidece of kidney impairment was sent to the laboratory for hormone determination. The volume was 600 mL but there was some question as to the completeness of the 24 hour collection. The next step would be to: ANSW ER -check the creatinine level; if it is >1g, do the procedure Failure to observe RBC casts in urine specimen can be caused by ANSWER -centrifuging an unmixed specimen eGFR calculated by the MDRD formula takes into account the age, BUN, race, albumin, and what else for its calculations? ANSWER -creatinine The creatinine clearance is reported in ANSWER -mL/min Microalbumin can be measured by a random urine collection. An increased microalbumin is predictive of ANSWER -nephropathy A patient with uncontrolled diabetes mellitus will most likely have ANSWER -pale urine and high specific gravity While performing an analysis of a baby's urine, the technologist notices the specimen to have a "mousy" odor. Of the following substances that may be excreted in urine, the one that MOST characteristically produces this odor is: ANSWER -phenylpyruvic a cid An ammonia -like odor is characteristically associated with urine from patients who ANSWER -have an infection with proteus spp. Urine that develops a port wine color after standing may contain ANSWER -porphyrins Acid urine that contains hemoglobin will darken on standing due to the formation of ANSWER -methemoglobin Urine from a 50 year old man was noted to turn dark red on standing. This change is caused by ANSWER -porphyrins The clarity of a urine sample should be determined ANSWER -following thorough mixing of the specimen Milky urine from a 24 year old woman would most likely contain ANSWER -many white blood cells A brown -black urine would most likely contain ANSWER -melanin The yellow colorof urine is primarily due to ANSWER -urochrome pigment Red urine may be due to ANSWER -myoglobin A urine specimen collected on an apparently healthy 25 year old man shortly after he finished eating lunch was cloudy but showed normal results on a multiple reagent strip analysis. The most likely cause of the turbidity is ANSWER -phosphates In which of the following metabolic diseases will urine turn dark brown to black upon standing ANSWER -alkaptonuria Urine osmolality is related to ANSWER -specific gravityThe benefits of buying summaries with Stuvia:
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