Filter paper blood collection and punching as a means of quantification.
D001786:Blood Glucose / Q000032:analysis; D001800:Blood Specimen Collection; D001806:Blood Urea Nitrogen; D005374:Filtration; D006400:Hematocrit; D006801:Humans; D008722:Methods; D010209:Paper; D010649:Phenylalanine / Q000097:blood; D014443:Tyrosine / Q000097:blood
D001786:Blood Glucose; D014443:Tyrosine; D010649:Phenylalanine