Related by context. Frequent words. (Click for all words.) 78 samples 71 sampling 64 sampled 57 samplings 56 Sampling 52 Samples 52 random sample 51 random sampling 51 urine sample 49 urine samples 49 statistically valid 49 stool samples 48 sampler 47 serum samples 46 swab 46 specimens 46 samples assayed 46 subsample 46 Sample 45 saliva samples 45 specimen 45 swabs 45 randomly selected 44 sediment samples 44 samplers 44 confirmatory 44 swab samples 43 test 43 particle sizes 43 randomly selected sample 43 assays 42 nasal swabs 42 fecal samples 42 saliva sample 41 semen sample 41 pipette 41 gel electrophoresis 41 DNA sample 41 analyzed 41 DNA swab 41 measurements 41 DNA samples 41 multivariate 41 testers 41 tissue samples 41 samples assaying 40 analytes 40 serological 40 assay 40 Activation Laboratories 40 duplicate samples 40 column leach 40 dataset 40 randomly chosen 40 analysis 40 pretest 39 SGS Lakefield Research 39 ml 39 subset 39 nanograms 39 isotopic 39 testing 39 mL 39 retesting 38 randomly sampled 38 tested 38 testwork 38 sieving 38 scrapings 38 Sampling error 37 vaginal swab 37 lab 37 batches 37 Accurassay Laboratories 37 Specimens 37 vial 37 ICP MS 37 picograms 37 quantities 37 tests 37 Actlabs 37 gas chromatography 37 NQ size 37 Swabs 37 skin prick 37 cheek swab 37 breathalyzer test 37 SGS Lakefield 37 mineralogical 37 cotton swab 37 sieved 37 swabbed 37 urine tests 37 genotyped 37 purchase cialis cialis 37 laboratory 37 liver biopsy 37 Tissue samples 37 genomic DNA 37 analyte 37 swatches