Exam 8: Urine Screening for Metabolic Disorders

Accumulation of large amounts of homogentisic acid in the urine is the result of which of the following disorders?

A routine urinalysis is performed on a specimen that has turned dark after standing in the laboratory.The urine is acidic and has negative chemical tests except for the appearance of a red color on the ketone area of the reagent strip.One should suspect:

Choose the characteristic odor for the following disorders: -Cystinosis

Choose cystinuria or cystinosis as the best match for the following statements of the condition: -Tendency to form renal calculi

Characteristic urine odors are associated with all of the following disorders except:

A pink color in the Hoesch test indicates the presence of:

Urine with the characteristic odor of "sweaty feet" and a positive ketone test indicates:

Persons diagnosed with PKU should avoid foods containing the chemical additive aspartame.

The presence of a massive amount of urinary calcium oxalate crystals is indicative of Lesch-Nyhan disease.

Patients who produce kidney stones at an early age should be tested for the presence of:

Choose cystinuria or cystinosis as the best match for the following statements of the condition: -Defective reabsorption of cystine,lysine,ornithine,and arginine

Hurler and Sanfilippo syndromes present with mental retardation and an increase in what urinary constituent:

The finding of increased amounts of the serotonin degradation product 5-HIAA in the urine indicates:

A specimen that produces a cherry red color with Ehrlich's reagent is extracted into chloroform,and both the aqueous and chloroform layers are red.You should:

To differentiate between cystinuria and homocystinuria,the urine should be tested with:

Choose cystinuria or cystinosis as the best match for the following statements of the condition: -True inborn of metabolism

A positive Guthrie test is interpreted by observing:

A disease that causes large amounts of branched-chain amino acids to be excreted in the urine is:

All of the following porphyrin compounds can be found in urine except:

Choose cystinuria or cystinosis as the best match for the following statements of the condition: -Generalized aminoaciduria