NCLEX-RN · Question #426
NCLEX-RN Question #426: Real Exam Question with Answer & Explanation
The correct answer is D. Lecithin-sphingomyelin ratio. (A) Dinitrophenylhydrazine is a laboratory test used to detect phenylketonuria, maple syrup urine disease, and Lowe's syndrome. (B) Metachromatic stain is a laboratory test that may be used to diagnose Tay-Sachs and other lipid diseases of the central nervous system. (C) The bloo
Question
Options
- ADinitrophenylhydrazine
- BMetachromatic stain
- CBlood serum phenylalanine test
- DLecithin-sphingomyelin ratio
Explanation
(A) Dinitrophenylhydrazine is a laboratory test used to detect phenylketonuria, maple syrup urine disease, and Lowe's syndrome. (B) Metachromatic stain is a laboratory test that may be used to diagnose Tay-Sachs and other lipid diseases of the central nervous system. (C) The blood serum phenylalanine test is diagnostic of phenylketonuria and can be used for wide-scale screening. (D) Alecithin-sphingomyelin ratio of at least 2:1 is indicative of fetal lung maturity, and survival of the fetus is likely.
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