Although both categories of drugs are banned, their performance-enhancing benefits are controversial. Glucocorticoids have been known since the 1930s to improve muscle endurance, which is why they are banned. They are also used for recovery, enabling athletes to sustain greater volume and intensity of training. As for beta2 agonists, an analysis of 26 studies found no significant benefits to athletes but competitors still use them extensively (hence the large number of positive tests). The oral and injected forms of both are also thought to help build muscle mass, similar to anabolics, and are banned in and out of competition. The (more common) inhaled forms, however, are permitted for many athletes who have demonstrated a need for them and have received a therapeutic use exemption (TUE). Confused yet?
Heavy consumption of the essential amino acid lysine (as indicated in the treatment of cold sores) has allegedly shown false positives in some and was cited by American shotputter C. J. Hunter as the reason for his positive test, though in 2004 he admitted to a federal grand jury that he had injected nandrolone.  A possible cause of incorrect urine test results is the presence of metabolites from other AAS, though modern urinalysis can usually determine the exact AAS used by analyzing the ratio of the two remaining nandrolone metabolites. As a result of the numerous overturned verdicts, the testing procedure was reviewed by UK Sport . On October 5, 2007, three-time Olympic gold medalist for track and field Marion Jones admitted to use of the drug, and was sentenced to six months in jail for lying to a federal grand jury in 2000. 
Antinuclear Antibody Screen (ANA); Anti Strptolysin-O (ASO); Calcium (Ca); Chem 6 [Blood Urea Nitrogen (BUN); Creatinine; Electrolytes [ Carbon Dioxide (CO2); Chloride (CL); Potassium (K); Sodium (Na) ]; Complete Blood Count [ Automated Differential; Hematocrit (Hct); Hemoglobin (Hgb); Mean Corpuscular Hemoglobin (MCH); Mean Corpuscular Hemoglobin Concentration (MCHC); Mean Corpuscular Volume (MCV); Platelet (PLT); Red Blood Cell Count (RBC); Red Cell Distribution Width Standard Deviation (RDWSD); Red Cell Distribution Width Coefficient Variation (RDWCV); White Blood Cell Count (WBC)] ; C-Reactive Protein (CRP); Creatine Kinase (CK); Epstein-Barr Virus Basic Panel [Epstein-Barr Virus Antibody IgG; Epstein-Barr Virus Antibody IgM] ; Estrogen, Total; Glucose Random; HLA-B27 Antigen; Insulin - Like Growth Factor 1 (IGF-1 / Somatomedin C); Magnesium (Mg); Parathyroid Hormones Intact (PTH Intact); Progesterone; Protein Electrophoresis; Rheumatoid Factor (RF); Sedimentation Rate (ESR); Testosterone, Total; Thyroid Profile with TSH [Free Thyroxine Index (FTI); T3 Uptake; Thyroid Stimulated Hormone (TSH); Thyroxine Total (T4)]; Uric Acid