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Factor 4: Room-temperature injection Injecting refrigerated solution increases pain reports by 19% compared to room-temperature solution
Please note that the other tests mentioned do not directly measure vitamin B12 levels but instead help assess factors related to B12 deficiency or excess
Some physicians will authorise patients to receive injections more frequently than the recommended regimen (see Box), but many will not
The effect builds slowly, over months or years, until it shows up as fatigue in someone already managing insulin resistance or PCOS with the same drug
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