Related by context. Frequent words. (Click for all words.) 70 Urine samples 61 urine specimens 59 Urine tests 59 Tissue samples 59 urine samples 58 NHANES III 57 saliva samples 57 serum samples 56 semen sample 56 samples 56 fecal samples 56 tissue samples 55 thyroid stimulating hormone 55 swab samples 54 stool sample 54 semen samples 53 mouth swabs 53 Prostate Specific Antigen PSA 53 analyzed 53 Biopsies 53 creatinine levels 53 vaginal swabs 52 biopsy specimens 52 tissue biopsies 52 liver biopsies 51 saliva sample 51 Soil samples 51 oestradiol 51 fasting insulin 51 multivariate analyzes 51 sample 50 testosterone epitestosterone ratio 50 vaginal swab 49 semen 49 serum calcium 49 oral glucose tolerance 49 univariate 49 covariate 49 Observational studies 49 sputum samples 48 cheek swabs 48 vaginal secretions 48 sentinel nodes 48 estimated glomerular filtration 48 pharmacodynamic effects 48 cystatin C 48 boosting hormone EPO 48 serological 48 serum albumin 48 covariates 48 fingerstick 48 creatine kinase 47 vitro experiments 47 univariate analysis 47 sociodemographic 47 serologic 47 toenail clippings 47 nasal swabs 47 ovulated 47 toxicological tests 47 oral swab 47 follicle stimulating hormone FSH 47 serum testosterone 47 immunohistochemical 47 HBsAg 47 urine sample 47 quantitative PCR 47 measurements 47 saliva swab 47 fMRI scans 46 ANOVA 46 serum PSA 46 seropositive 46 hormones estrogen 46 lipid profiles 46 peripheral blood mononuclear 46 Epidemiological studies 46 Necropsies 46 serum uric acid 46 coronary artery calcification 46 epitestosterone levels 46 cotinine 46 hemoglobin A1C 46 urine 46 retrospective cohort study 46 prescription painkiller Vicodin 46 genistein 46 Pharmacokinetic 46 thyroid medication 46 prostate biopsies 46 stool samples 46 Western blot 46 ± SD 45 dobutamine 45 lipid lowering therapy 45 histopathological 45 fingernail scrapings 45 polycystic ovary syndrome PCOS 45 DNA samples 45 cortisol levels 45 prostate glands