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Pinch a fold of skin, insert at 45 to 90 degrees, inject slowly, hold for 5 to 10 seconds, then withdraw
Last reviewed: April 2026
At first, shots might be given weekly or every two weeks
A major issue is that the test must be done prior to treatment with pharmacological doses of the vitamin, and thus the patient may display a temporary B12 malabsorption caused by an intestine suffering from the lack of B12
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