What is a healthy level of active B12?
                                
                                
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                                    5 min read                                
                            
                                According to studies, only 10-30% of the vitamin B12 in your blood is in its 'active' form, known as holotranscobalamin. Understanding what is a healthy level of active B12 is therefore crucial for assessing your true vitamin status and avoiding a misdiagnosis based on total B12 alone.