"Why do I get negative results on some tests and positive on others?" Optimizing Detox and Self-Testing for Consistent Results I...

Everything you need to know about THC Self Test  Opiate /cocaine have higher threshold, THC is lowest thus why lines are dark or light when ...

Negative or Positive Test Result ?   ALL THC LINES ARE FAINT  IF YOU CAN SEE IT THEN ITS NEGATIVE   Is your self test Qualitative or  ...