NCLEX RN Practice Question # 843
NCLEX Examination.
Practice Question # 843.
nclex examination.
Homocysteine is a nonproteinogenic amino acid that is generated during the conversion of methionine to cysteine. Mutations of the enzymes within the biochemical pathways that regulate homeostatic homocysteine levels are associated with risk factors for various diseases, including venous thromboembolism.
Supplementation of folic acid, vitamin B6, and vitamin B12 are known to modulate homocysteine levels, given the interplay between the folate cycle and metabolism. This policy describes the medical necessity requirements for testing levels of homocysteine.