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Each peptide remains sealed in its own vial for correct identification, traceability, and protocol control in laboratory settings
Specifically, it consists of one full MS scan from 350 to 1,200 m/z, with a resolution of 120,000, defined at m/z 200 m, followed by the data-dependent MS/MS scan within 2 s, with dynamic exclusion of 1, exclusion duration of 45 s, and mass tolerance of 10 ppm, at an intensity threshold of 5E3
Never use beyond the printed expiry, regardless of the in-use date
One study, which also evaluated cognitive function in patients with high MMA concentrations, found no significant effects on the MDD inventory score, but only 30 of the 140 subjects had depression at baseline, which may have diluted any benefits
However, cyanocobalamin is generally a better option if budget is your main concern
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