THC Levels

how do ppl work out the thc levels of there plant ??????

Im assuming you could use Gas spectroscopy

...google it...

Honestly, people don't all use a universal method which is why seed manufacturer claims are fallible. You're less often mislead by the apparent effects you receive from sampling of the said plant. You shouldn't go for some strain because it says it has 25% THC. Any dick with Internet access can write that- it's been proven. Until everyone can agree to 1 distinct method, just go by how it treats ya.