The Precision Dx ETG Dip Card offers a fast, easy, and accurate test for the detection of ETG at a 500ng/mL cutoff in human urine. Up to 80 hour detection Read results at 5 minutes, the results are stable for 1 hour Comparable to Lab Tests 24 Month Shelf Life from Date of Manufacture Compared to Generic, it's Easier to Interpret, More Accurate, and Reads Faster. Results Remain Valid For Up To 4 Hours After Test Initiation These are screening devices only and although very accurate if you get a positive we recommend a certified lab for LC-MS/MS Confirmation. These drug tests are intended for workplace testing & forensic use ONLY (not FDA cleared or CLIA waived)