The Pitfalls of Self-Testing Urine Drug Tests: Ignoring Specific Gravity and Creatinine Levels   Introduction: Self-testing at home may n...

  Pro Tips for using synthetic urine bottles for drug testing   So I want to assure the folks who have apprehensions about carrying urine bo...

Specimen validity testing the test before the (drug) test Specimen validity testing (SVT) is performed on a urine drug screen specimen to d...