- 1 What is a normal B12 blood test result?
- 2 What happens if your B12 is too high?
- 3 How much does vitamin B12 increase?
- 4 How long does it take to feel the effects of B12?
- 5 Why would a doctor order a B12 blood test?
- 6 Is 500 a good B12 level?
- 7 How long does it take to get rid of excess B12?
- 8 Does high B12 mean deficiency?
- 9 Is High B12 serious?
- 10 Can I take B12 twice a day?
- 11 How much vitamin B12 is recommended a day?
- 12 How do you know if your B12 is low?
- 13 When should I take B12 morning or night?
- 14 What medications should not be taken with B12?
- 15 Does B12 help you lose weight?
What is a normal B12 blood test result?
Understanding the Results
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.
What happens if your B12 is too high?
However, supplementing with excessively high levels of B12 has been linked to some negative side effects. Several studies have shown that megadoses of the vitamin can lead to outbreaks of acne and rosacea, a skin condition that causes redness and pus-filled bumps on the face.
How much does vitamin B12 increase?
To raise your vitamin B12 level, you have to take at least 1,000 mcg of vitamin B12 every day.
How long does it take to feel the effects of B12?
A response usually is seen within 48 to 72 hours, with brisk production of new red blood cells. Once B12 reserves reach normal levels, injections of vitamin B12 will be needed every one to three months to prevent symptoms from returning.
Why would a doctor order a B12 blood test?
Vitamin B12 and folate are separate tests often used together to: Detect low levels (deficiencies) Diagnose the cause of certain anemias, such as pernicious anemia, an autoimmune disease that affects the absorption of B12.
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 . Higher vitamin B12 ranges have been associated with increased cognitive function, and reflexes, decreased brain atrophy, confusion, weakness and depression .
How long does it take to get rid of excess B12?
If a person stops consuming the vitamin, the body’s stores of this vitamin usually take about 3 to 5 years to exhaust. People should not take high doses of vitamin B12 as a cure-all, but otherwise the vitamin does not appear to be toxic; consuming excess amounts of B12 is not recommended.
Does high B12 mean deficiency?
Deficiency should be confirmed by checking the level of a substance in the blood called methylmalonic acid. A high level indicates a true B12 deficiency. Causes of vitamin B12 deficiency include: Not enough vitamin B12 in diet (rare, except with a strict vegetarian diet)
Is High B12 serious?
There is no upper limit for vitamin B-12 intake because consuming high levels does not cause problems. However, having naturally high levels of vitamin B-12 in the body may be a cause for concern, as it suggests a severe underlying condition.
Can I take B12 twice a day?
Early research suggests that taking twice the recommended daily allowance of vitamin B12, with or without folic acid, does not reduce the risk of diarrhea in children.
How much vitamin B12 is recommended a day?
The recommended daily amount of vitamin B-12 for adults is 2.4 micrograms.
How do you know if your B12 is low?
Symptoms of Vitamin B12 Deficiency
- Weakness, tiredness, or lightheadedness.
- Heart palpitations and shortness of breath.
- Pale skin.
- A smooth tongue.
- Constipation, diarrhea, loss of appetite, or gas.
- Nerve problems like numbness or tingling, muscle weakness, and problems walking.
- Vision loss.
When should I take B12 morning or night?
You may need to take vitamin B-12 separately from the above drugs and supplements — say, one in the morning and one at night — so you can get the full dose of vitamin B-12. Don’t take vitamin B-12 supplements if you have sensitivities or allergies to vitamin B-12, cobalt, and any other ingredients.
What medications should not be taken with B12?
Certain medications can decrease the absorption of vitamin B12, including: colchicine, metformin, extended-release potassium products, antibiotics (such as gentamicin, neomycin, tobramycin), anti-seizure medications (such as phenobarbital, phenytoin, primidone), medications to treat heartburn (such as H2 blockers
Does B12 help you lose weight?
If you want to lose excess weight, vitamin B12 has been linked to weight loss and energy enhancing. Vitamin B12 plays a major role in the body’s essential functions, including DNA synthesis. Vitamin B12 also helps the body convert fats and proteins into energy.