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purity depends entirely on the supplier's certificate of analysis (vendors commonly claim roughly 98% by HPLC)
Each batch undergoes analytical verification for identity and purity using HPLC and mass spectrometry
If you experience these symptoms, blood testing can confirm whether B12 deficiency is the cause
It can cause too low blood sugar in patients with type 2 diabetes who also take another glucose control medication
Easy measuring: At 2.5 mg/mL, 1 unit = 0.01 mL = 25 mcg on a U-100 insulin syringe
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