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- ... performed: You are instructed to collect a "clean-catch" (midstream) urine sample. To obtain a clean-catch sample, men or boys should wipe clean the ...
- A "clean-catch" urine sample is performed by collecting the sample of urine in midstream. Men or boys should wipe clean ... urethra of contaminants). Then, in a clean container, catch about 1 to 2 ounces of urine and ...
- ... leading from the leg to the heart, to catch any clot that may embolize up toward the ...