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Confirming or excluding interference Discordance between the result and the clinical picture raises the possibility of assay interference
Heres the kicker: blood serum B12 tests are unreliable , especially in people who have been supplementing (even just with a multivitamin)
use a 1 mL syringe Vial setup 1,000 mg + 10 mL Concentration 100 mg/mL Selected amount 100 mg Draw volume 1.00 mL U-100 units 100 units Syringe note Exceeds 0.5 mL
213 ZhengB.WangC.HeL.XuX.QuJ.HuJ.et al (2013)
If a provider uses high-pressure sales tactics, limited-time offers, or aggressive upselling during medical consultations, their priorities are misaligned
10: e0122415
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