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I suspect you ordered 2ml instead of 1m ampoules

The biggest hurdle to accuracy of salivary testing is the compliance with saliva sampling
But it could also happen at 40 if it's pouring rain and windy, and even at higher temperatures if you are wet for long periods
Nhu NT, Xiao SY, Liu Y, et al
The blue colour confirms intact Cu(II) chelation on the GHK-Cu component
