Screening for vitamin c status.
D000367:Age Factors; D001205:Ascorbic Acid / Q000032:analysis*; D001206:Ascorbic Acid Deficiency / Q000175:diagnosis*; D002784:Cholesterol / Q000097:blood; D004396:Coloring Agents; D006801:Humans; D008722:Methods; D014059:Tongue / Q000032:analysis*
D004396:Coloring Agents; D002784:Cholesterol; D001205:Ascorbic Acid