The body excretes excess B12 through the kidneys, and no Tolerable Upper Intake Level exists because B12 toxicity from dietary sources is extremely rare
2), GLP-1 protein was detected in acid-ethanol extracts of rat and human gastric mucosa
If a patient develops a thyroid nodule while taking tirzepatide, evaluation should follow standard American Thyroid Association guidelines, including TSH testing, ultrasound risk stratification, and FNA based on size and risk features
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How to check for Vitamin B12 deficiency with lab tests: Serum Vitamin B12 levels: should be in the top 75% percentile of the lab reference range (yes even mid-range can still be too low)