Prime Screen - [10 Pack] - Fentanyl Urine Drug Test Kit with 20 ng/mL cut-off level- Medically Approved Urine Drug Screening Test - Detecting Any Form of Fentanyl Test - WFTY-114

Okay, so it says the cut off is 20ng/mL. This is the link I bought them from. Maybe my understand is flipped. As far as the tests at the clinic. She said they do send them to the lab for confirmation. She said she does not get access to the level of the drug. They only get a + or a - in our charts. https://www.walmart.com/ip/710941679?sid=a9ffc912-7a0f-4fbb-b74a-b830b9228ff1