It is like asking if Penecillin will show up or if Amoxicillin will show up! there are a million drugs out there.. they all have to be tested for differently. there are so ethings that can false.. for instance taking some over the counter cold and flu medicines and vallium can false for methadone. but as far as tamoxifen and clomid and liquidex etc. etc. I would not even blink and eye at it