Urinalysis Test III Chapter 9

Homogentisic acid

Alkaptonuria, a rare hereditary disease, is characterized by the urinary excretion of 

Polyuria

Which of the following abnormalities is not a clinical feature of an infant with galactosuria

Melanin

Which of the following substances oxidizes with exposure to air, causing the urine to turn brown or black

Serotonin

What is 5-HIAA a degradation product of

Galactosemia

The following urinalysis biochemical results were obtained from a 4-month old infant who experienced vomiting and diarrhea after milk ingestion and failed to gain weight:  pH - 6; protein - negative; glucose - negative; ketone - negative; bilirubin - negative; Clinitest - 2+. These results are clinically significant in which of the following disorders

Hartnup disease

What disorder is accociated with blue diaper syndrome

Melanuria

Which disorder cannot be dectect by the newborn screen

Black color

Which abnormality is seen in the presence of Alkaptonuria

Porphyrin precursor accumulation causes skin photosensitivity

Which of the following statements regarding porphyrin and porphyrin precursors is false

Port wine

What urine color is associated with porphyria

Lesch-Nyhan disease

Uric acid crystals (many in number) present in the urine of a pediatric urine specimen may indicate

Melanin

In certain malignant disorders, what substance is found in teh urine that turns the urine dark brown or black on exposure of the urine to air

Sulfur odor

Which abnormality is noted with Cystinuria

5-Hydroxyindole acetic acid

Metastatic carcinoid tumors arising from the enterochromaffin cells of teh gastrointestinal tract are characterized by increased excretion of urinary 

Alkaptonuria

Which of the following diseases results in the accumuation and excretion of large amount of homogentisic acid

Lactose

Galactose is produced in the normal metabolism of 

Alkaptonuria

Which of the following diseases will not result in severe mental disability if not detected and treated in the infant

Sweet odor

A urine specimen from a pediatric patient with Maple Syrup Urine Disease will have a distinct 

Maple Syrup Urine Disease

Which one of the phenylalanin-tyrosine pathway overflow disorders will give a positive reagent strip ketone reaction

Cystinuria

Which of the following disorder is characterized by the urinary excretion of large amoounts of arginine, cystine, lysine, and ornithine

Spit

Which specimen is not approperiate to use when testing for prophyrins

Excess tyrosine accumulates in the blood

Phenylketonuria may be characterized by which of teh following statements

Increased heme formation

Porphyria is characterized by

Blood

What is the specimen that is used for the newborn screen

Orange sand in diaper

Which abnormality is noted with Lesch-Nyhan disease

Blue color

Which abnormality is noted with Indicanuria

Tyrosinuria

An overflow mechanism is responsible for the aminoaciduria present