vitamin b12 injection overdose symptoms side effects from too much TeleHealth Weight Loss Clinic Size:10g About to start B12

About to start B12 injections today after getting these results. How likely am I to start feeling an immediate improvement? : r/B12_Deficiency

Your body relies on B12 to create healthy red blood cells

Sandoz vitamin B12 vial

Size:10X1 ml

From a laboratory medicine perspective, the Association for Clinical Biochemistry and Laboratory Medicine (ACB) and the Royal College of Pathologists (RCPath) advise that: HbA1c may be unreliable in the presence of haemolytic anaemia, haemoglobinopathies, or nutritional deficiencies affecting red cell biology — and the direction of distortion may be high or low Clinicians should document any known haematological conditions when requesting HbA1c, so laboratory staff can flag potential inaccuracies Serum B12 testing should be considered in patients on long-term metformin who are symptomatic or have risk factors for deficiency, in line with MHRA and NICE advice [1] Alternative tests — fasting plasma glucose, OGTT, or interim use of fructosamine/glycated albumin — should be considered when HbA1c reliability is in doubt The NHS website (nhs.uk) provides patient-facing information on the HbA1c test and factors that can affect its accuracy, which patients may find a useful starting point