| Abbreviations | Meaning |
 | CDNA | Circular Deoxyribonucleic Acid; Complementary Deoxyribonucleic Acid |
 | DHCA | Deep Hypothermia And Circulatory Arrest; Dihydroxycholestanoic Acid |
 | APPA | American Psychopathological Association; 4-aminophenylacetic Acid |
 | MELAS | Mitochondrial Encephalomyopathy, Lactic Acidosis, And Stroke-like Symptoms [syndrome] |
 | AAAD | Aromatic Amino Acid Decarboxylase |
 | NSD-1055 | Aromatic L-amino Acid Decarboxylase (AADC) Inhibitor |
 | NAT | Nucleic Acid Testing |
 | ELSA | European Lacidipine Study On Atherosclerosis; European Longitudinal Study On Aging |
 | U | Uridylic Acid |
 | FAAP | Free Amino Acid Pool |
 | AMD | Acid Maltase Deficiency; Acromandibular Dysplasia; Actinomycin D; S-adenosylmethionine Decarboxylase; Adrenomyelodystrophy |
 | HNAD | Hyperosmolar Nonacidotic Diabetes |
 | PCA | Perchloric Acid |
 | RAPD | Randomly Amplified Polymorphic Deoxyribonucleic Acid [DNA]; Relative Afferent Pupillary Defect |
 | PPA | Phenylpyruvic Acid |