Exam 28: Assisting in the Analysis of Urine
Crystal deposits are detected in urine after it has cooled.
True
On chemical analysis,a urine specimen from a female with a urinary tract infection most likely reveals __________ pH,________ nitrite,and _________ leukocyte esterase.
B
You are working in a PCP office that routinely performs work-related drug screenings.Describe several methods that may be used to ensure that the urine sample has not been adulterated.
A random specimen is usually collected.Safeguards to ensure that a specimen is fresh and truly from the patient include: water may be temporarily unavailable in the restroom,bluing agents may be added to the toilets,a container with a temperature-sensitive strip may be provided,and someone may accompany the patient into the restroom.In some cases a strict chain of custody is required.Urine collection cups with built-in thermometer panels are often used to ensure that urine has been freshly voided from the bladder.The expected temperature is 90° to 100° F (32.2° to 37.7° C)within 4 minutes of collection.Test strips that detect human immunoglobulins (antibodies)in urine can determine whether the specimen is human in origin and whether it is naturally dilute or has been diluted.
____________ is the study of poisonous substances and their effects on the body.
Of the many sugars that can be present in the urine,only glucose and galactose signify a pathologic condition.
When instructing a female patient in how to obtain a clean-catch,midstream urine specimen,you should tell her to use how many antiseptic towelettes?
Refrigeration of urine can cause ___________ urates or phosphates to settle out of a urine sample.
A random urine sample may contain blood from vaginal contamination if the woman is ______________.
In the microscopic observation of urine sediment,yeast most resembles
In general,artifacts in urine sediment,such as mucous threads and starch granules,are quantified and reported.
QC for the microscopic examination of urine relies on standardized commercial systems such as KOVA.
Quality control methods for microscopic examination of urine require a minimum of 20 mL of urine that has been centrifuged for 10 minutes.
What is the last portion of the nephron that the filtrate travels through?
Which of the following urine specimens are used in diabetes screening and for home diabetes testing programs?
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