Exam 8: Urine Screening for Metabolic Disorders

All of the following porphyrin compounds will exhibit fluorescence under ultraviolet light except:

Select the appropriate screening test result for the following disorders: -Methylmalonic acidemia

A false-positive reaction for urinary ketones could be present in patients who have:

Porphyrins are intermediary compounds in the formation of:

State what action the urinalysis supervisor could take in the following situations: -A positive Clinitest with a yellow precipitate is noted from a patient with liver and cardiac abnormalities.

The 2,4-dinitrophenylhydrazine reaction is the confirmatory test for maple syrup urine disease.

All of the following disorders are caused by defects in the phenylalanine-tyrosine pathway except:

The finding of persistent ketonuria in a newborn is:

The following urinalysis results are obtained from a newborn: -Based on the information provided,what is the infant's most probable disorder?

Symptoms of inherited porphyrias include all of the following except:

Melituria refers to an increase in urinary:

A urinalysis and a dinitrophenylhydrazine (DNPH)test are performed on an infant who is failing to thrive.If the DNPH test is positive,what result in the urinalysis will also be positive?

Urine from a child suspected of having lead poisoning has a red fluorescence under Wood's lamp.This finding is:

The silver nitroprusside test detects the presence of:

Analysis of urine from an infant whose mother reported a blue staining on the diapers showed increased levels of indican and a generalized aminoaciduria.On the basis of these findings,the infant was diagnosed as having:

Which of the following compounds does not react directly with either Ehrlich reagent or fluorescence?

The presence of maple syrup urine disease is first suspected by the presence of abnormal urine:

Chemical screening tests for cystine can produce false-positive results in the presence of urinary ketones because:

Select the appropriate screening test result for the following disorders: -PKU

Both cystine and leucine crystals are present in the urine of patients with cystinuria.