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Low B12 readings.
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Low B12 readings.

Not sure if this is the right category but: I have been experiencing extensive hair loss the last couple of months. I am female 58 years old. I finally got my doctor to give me an extensive blood and urine test and a flag came up on my B12 reading. I read my results online this morning. The number is: 1260. I know my doc will call but thought I'd post here and get some input if any available. Thanks in advance.
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1260 either in pg/mL or pmol/L is a elevated vitamin B12 level. Serum B12 measures the total amount of B12 in the blood and does not rule out functional (active) B12 deficiency.  An active vitamin B12 deficiency can be seen with normal or high B12 serum levels.  More sensitive markers for B12 deficiency include methylmalonic acid (MMA), holotranscobalamin II (holo-TC), and homocysteine (Hcy).

Levels of serum vitamin B12 may be raised in:

* Frequent consumption of foods high in vitamin B12

* Vitamin B12 (supplements, injections, sublingual etc), B complex, multivitamins

* Functional (active) B12 deficiency

* Bacterial overgrowth in the bowel

* Polycythaemia Rubra Vera  

* Leukaemia:
- Chronic myelogenous leukaemia (aka chronic granulocytic leukaemia)
- Acute myeloblastic leukaemia
- Acute promyelocytic leukaemia  

* Hypereosinophilic syndrome

* Myelosclerosis

* Carcinomatosis

* Liver disease:
- Acute hepatitis
- Cirrhosis
- Chronic liver disease
- Hepatic coma

* Non-leukaemic leucocytosis

* Chloral Hydrate

* Lab Error
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