title: A clinical evaluation of an improved TFA micromethod for plasma and serum vitamin A.
mesh_terms: D000085:Acetates / Q000097:blood; D000328:Adult; D000438:Alcohols / Q000097:blood; D001774:Blood Chemical Analysis / Q000592:standards; D001800:Blood Specimen Collection; D002338:Carotenoids / Q000097:blood; D002648:Child; D002675:Child, Preschool; D005006:Ethnicity; D005069:Evaluation Studies as Topic; D005385:Fingers; D005463:Fluoroacetates; D006801:Humans; D007223:Infant; D008722:Methods; D008832:Microchemistry; D010949:Plasma / Q000032:analysis; D013053:Spectrophotometry; D014680:Veins; D014801:Vitamin A / Q000097:blood*
chemical_list: D000085:Acetates; D000438:Alcohols; D005463:Fluoroacetates; D014801:Vitamin A; D002338:Carotenoids