US$ 22.73
b12 injection solution Cyanocobalamin Vitamin 1000 mcg — Mountainside Medical Rx only Sold in 100 mL MIC + B12 Injection –
Description
Insulin and glucose handling preclinical investigation has tracked changes in fasting glucose, insulin sensitivity, and hepatic glucose output, distinguishing AOD-9604 from intact hGH

If your particular GP is unhelpful, could there be another in the practice who you could see instead

Cell lysates were centrifuged at 4 C

Here are several tests I analyze routinely for functional B12 deficiencies
