8,15 Serum holotranscobalamin level, which is reduced in vitamin B 12 deficiency, compared favorably with homocysteine and methylmalonic acid levels as a confirmatory test in one study, but further trials are needed before its widespread use for this purpose can be recommended
[DOI] [PubMed] [Google Scholar] 34.Duzel A., Vlainic J., Antunovic M., Malekinusic D., Vrdoljak B., Samara M., Gojkovic S., Krezic I., Vidovic T., Bilic Z., et al
16 units = 400 mcg each
BAC Water is a sterile aqueous solution containing benzyl alcohol, formulated for laboratory and research applications where dilution or reconstitution of research compounds is required
There is a standardised test from urine available through a method called solid-phase extraction method, with more than 50 pg/mL (picograms per millilitre) being a positive sample [1]
An injection skips those bottlenecks entirely