title: Theophylline assay on dried blood spots.
mesh_terms: D001249:Asthma / Q000188:drug therapy; D001800:Blood Specimen Collection; D005470:Fluorometry / Q000379:methods; D006801:Humans; D013806:Theophylline / Q000097:blood* / Q000627:therapeutic use
chemical_list: D013806:Theophylline