Independent replication by groups not affiliated with the original researchers is limited
A peptide stored perfectly may remain highly stable beyond the estimated window, while the same peptide may lose significant potency much sooner if exposed to: Room temperature for extended periods Excessive light Improper pH Microbial contamination Repeated freeze-thaw cycles Aggressive shaking This is why laboratory technique is often just as important as the peptide itself
For example, if you intended to have a 1mg/ml solution but accidentally added too little bac water, your solution might be 2mg/ml
[DOI] [PMC free article] [PubMed] [Google Scholar] 59.Pevec D, Novinak T, Bri L, ipo K, Juki I, Stareini M, et al
When to seek medical advice : Contact your GP if you experience symptoms of B12 deficiency, such as persistent fatigue, pins and needles, memory problems, or glossitis (sore, red tongue)