The test kits are very ambiguous and don't tell you the concentration nor are consistently accurate.
It's much better to go with HPLC assays so that you have qualitative and quantitative testing ( what you have is positively identified and the concentration).
There are 3 loves in my life: my wife, my English mastiffs, and my weightlifting....Man, my wife gets really pissed when I get the 3 confused...
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