Laboratories typically reconstitute lyophilised reference peptides on the bench with a suitable laboratory solvent such as bacteriostatic water, following their own standard operating procedures
1 Introduction Vitamins of the B complex comprise a group of eight water-soluble vitamins that play a crucial role in maintaining optimal neurological function, such as energy production, DNA/RNA synthesis/repair, genomic and non-genomic methylation, and synthesis of neurochemicals ( Figures 1 , 2 ) ( Figure 1 Figure 2 Thiamine (B1) deficiency is often associated with beriberi, a syndrome mainly characterized by polyneuritis and/or cardiovascular symptoms (12)
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Additional risk factors include: Chronic kidney disease : Reduced renal clearance may impair B12 excretion Liver disease : Hepatic dysfunction can disrupt B12 metabolism and storage Myeloproliferative disorders : Certain blood cancers increase B12-binding proteins Concurrent medication use : Some drugs may interact with B12 metabolism, including metformin, proton pump inhibitors, and H2 antagonists Patients with these conditions should have B12 supplementation carefully monitored by their healthcare team