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Some clinics insist on a blood test first
I nearly died in LA, then in New York, then in Santa Fe, then in San Francisco, then in LA, then in New York again
Some practitioners prefer it because of this, arguing that patients with certain metabolic variants may convert cyanocobalamin less efficiently
Keep enough time for processing, travel, and any clinical questions that may need clarification
What happens if I accidentally add 4 mL of water instead of 3 mL
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