Technological revolution and advancements in laboratory research brought us drug testing, but what is more fascinating – we can use little drug testing devices similar to a pregnancy test at home! Pretty easy and simple to use, these devices sometimes cause a lot of confusion. Single testers, multiple substances testers, urine testers, saliva testers – they all have one thing in common: test and control lines. Control line is an indication of the proper functioning of the testing device; test line would point to a positive or a negative test reading. It does not seem to be very complicated, but:
- Hi there. I got your testers for marijuana last week, and I used one the other day and everything was fine, I mean the tester was good, but this one that I just used does not work! And I have five more – I am really concerned about this upcoming test and I need to know for sure that these little testers are accurate!
- When you say “does not work” – what exactly do you mean? Are you getting any colored bands?
- I am getting colored bands all right, but they are blue! Last time they were red! And it does not say anything in the instructions about testers giving different colors!
- Well, sir, the color itself does not indicate the validity of the test, the color can vary anywhere from blue and purple to red and pink. It is the fact that you get one or two colored bands that matters.
- Well, the test itself looked different – are they all different, are they all going to show different colors?
- The testers themselves should be similar. Did you buy any from a different store?
- Wait a minute… I think I did! Oh my, I cannot believe it! I forgot I got some the other day! And they were way too expensive!
- Well, all home testing devices would have similar sensitivity levels, but the colored bands may differ in colors, so just do the reading by the number of colored bands.
- Ok, thank you so much! Sorry to confuse you!