Just got one of my tests back for WWB Reta 20mg. Purity was good at 99.7% but quantity measured 18mg. Looking back over the past 10 results (dating back to Sep1) there's a consistent pattern of underfilled vials, by an average margin of 5-10%. And wouldn't you know it this differs from the ones they sent to Janoshik that are publicly available.
It is what it is, but be aware if you take their Reta and do not test your kit, you may want to pull an extra notch on your dose for the expected effects. And before anyone starts barking about the results being from Finnrick labs, WWB was the only vendor with this consistent of a divergence using the same labs. I've tested Reta from 5 other CN sources and zero were underfilled.
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