What should B12 levels be UK?
Reference Ranges
| Analyte | Range | Units |
|---|---|---|
| Vitamin B12 | 180 – 1000 | pg/ml |
| Folate | >4.0 | ng/ml |
What is normal range for B12 in blood?
But a normal level of vitamin B12 in your bloodstream is generally between 190 and 950 picograms per milliliter (pg/mL). Between 200 to 300 pg/mL is considered borderline and your doctor may do more testing. Below 200 pg/mL is low and more testing is needed.
Is 500 a good B12 level?
The vitamin B12 standard reference range is 200–700 pg/ml whereas the proposed optimal range is 500–1300 pg/ml [10]. Higher vitamin B12 ranges have been associated with increased cognitive function, and reflexes, decreased brain atrophy, confusion, weakness and depression [10].
What level of B12 is dangerously low?
Values of less than 160 pg/mL (118 pmol/L) are a possible sign of a vitamin B12 deficiency. People with this deficiency are likely to have or develop symptoms. Older adults with a vitamin B12 level less than 100 pg/mL (74 pmol/L) may also have symptoms.
Is B12 level of 1400 too high?
The normal range for vitamin B12 (total) is between 200 – 1100 ng/L (nanograms per liter), 200 – 1100 pg/mL (picograms per milliliter), or 148 – 811 pmol/L (picomoles per liter). The normal range for active vitamin B12 (holoTC) is around 20 – 134 pmol/L (picomoles per liter).
Is it OK to take 500 mcg B12 daily?
In one 8-week study in 100 older adults, supplementing with 500 mcg of vitamin B12 were found to normalize B12 levels in 90% of participants. Higher doses of up to 1,000 mcg (1 mg) may be necessary for some ( 10 ).
What is the optimal level of vitamin B12?
Healthy Levels. Vitamin B12 status is measured by blood tests, and the the National Institutes of Health says healthy B12 blood serum levels should be at least 250 picograms per milliliter in adults.
What causes a high level of vitamin B12 in the body?
Elevated blood levels of vitamin B12 are generally associated with increased amounts of proteins that carry vitamin B12 in the bloodstream or release of stored vitamin B12. The most obvious cause of an elevated vitamin B12 level is taking too much of the vitamin in the form of supplements.
What does a high vitamin B12 level indicate?
If you have elevated vitamin B12 levels in your bloodstream, it is a sign of a serious illness. The most common diseases associated with high levels of the vitamin are kidney failure, blood cancers, leukemia, liver disease, polycythemia vera, and hypereosinophilic syndrome.
What are the dangers of high vitamin B12?
High levels of vitamin B12 may lead to skin conditions such as outbreaks of acne and rosacea, which cause redness and pus-filled lesions on the face. Too much vitamin B12 activates specific bacteria that can lead to acne-promoting inflammation.