single packed, good quality and proper price ONE-STEP HCG URINE PREGNANCY CASSETTE TESTOne-step HCG test is designed by sandwich principle for detection ofHCG in urine. The test owned characteristics of 25 mIU/ml sensitivity,specifity,speedy and simplicity.Specimen CollectionAny urine specimen is appropriate for HCGtesting, but the first morning urine is optiomal because it generally contains the ...