Question 1

The free erythrocyte protoporphyrin test is the recommended screening test for lead poisoning.

Accepted Answer

The free erythrocyte protoporphyrin (FEP) test is a recommended screening test for lead poisoning as it detects abnormal levels of protoporphyrin in red blood cells, which can be an early indication of lead toxicity.

Question 2

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

Accepted Answer

The presence of calcium oxalate crystals in urine is not specific to any particular disease. Lesch-Nyhan disease is a rare genetic disorder that affects the metabolism of purines, leading to a buildup of uric acid in the body and neurological symptoms.

Question 3

Uric acid crystals are frequently seen in the urine of pediatric patients.

Accepted Answer

Uric acid crystals are more commonly seen in the urine of newborns due to their immature kidneys and the concentration of their urine, but they are not frequently seen in older pediatric patients unless there is an underlying condition.

Question 4

A negative reagent strip test for glucose and a positive Clinitest on a pregnant woman are associated with gestational diabetes.

Accepted Answer

A negative reagent strip test for glucose indicates no glucose in the urine, and a positive Clinitest, which tests for reducing substances, may indicate the presence of other sugars but not necessarily glucose. Gestational diabetes is diagnosed based on blood glucose levels, not urine sugar tests.

Quiz 8: Urine Screening for Metabolic Disorders

The free erythrocyte protoporphyrin test is the recommended screening test for lead poisoning.

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

Uric acid crystals are frequently seen in the urine of pediatric patients.

A negative reagent strip test for glucose and a positive Clinitest on a pregnant woman are associated with gestational diabetes.