• What is a vitamin B test?

  B vitamins are nutrients that your body needs to work well and stay healthy. There are eight different types. A vitamin B test checks the level of one or more B vitamins in a sample of your blood or urine (pee).

  All the B vitamins together are called the "B vitamin complex." The B vitamins are:

  • B1, thiamine
  • B2, riboflavin
  • B3, niacin (also called nicotinic acid and nicotinamide)
  • B5, pantothenic acid
  • B6, pyridoxal phosphate
  • B7, biotin
  • B9, folate (folic acid)
  • B12, cobalamin

  Each type of vitamin B plays different important roles in your body, such as helping to:

  • Maintain normal metabolism (the process your body uses to make energy from food you eat)
  • Make healthy blood cells
  • Keep your nervous system working properly

  You get B vitamins from many foods, including leafy green vegetables, meats and fish, eggs, whole grains, milk, and other dairy products. A lack of vitamin B is rare in the United States, because many foods have added B vitamins. These foods include cereals, breads, and pasta.

  But certain diets and health conditions can affect how well your body absorbs vitamin B. And if you lack B vitamins, it can cause serious health problems. For example, a lack of B12 can cause anemia and nerve disorders.

  A lack of B vitamins is called a vitamin B deficiency. It's usually treated with supplements. But it's important to talk with your health care provider before taking vitamin B supplements. That's because large amounts of some B vitamins can cause health problems, too. And some B vitamins may affect the way certain medicines work in your body.

• What is it used for?
• Why do I need a vitamin B test?
• What happens during a vitamin B test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• Is there anything else I need to know about vitamin B testing?
• References

• Vitamin B1 Reference Range

  Use the slider below to see how your results affect your health.

  nmol/L

  66.5

  200

  Your result is Normal.

  Normal results vary based on the laboratory and the method used.
• What is a vitamin B1 test?
• Why do I need a vitamin B1 test?
• What happens during a vitamin B1 test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• Is there anything else I need to know about a vitamin B1 test?
• References

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."

• Vitamin B2 Reference Range

  Use the slider below to see how your results affect your health.

  μg/L

  4

  24

  Your result is Normal.

  Normal results can vary based on the laboratory and the method used.
• What is a vitamin B2 test?
• What is it used for?
• Why do I need a vitamin B2 test?
• What happens during a vitamin B2 test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• Is there anything else I need to know about a vitamin B2 test?
• References

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."

• Vitamin B3 Reference Range

  Use the slider below to see how your results affect your health.

  μg/mL

  0.5

  8.45

  Your result is Normal.

  Normal results vary based on the laboratory and the method used.
• What is a vitamin B3 test?
• Why do I need a vitamin B3 test?
• What happens during a vitamin B3 test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• Is there anything else I need to know about a vitamin B3 test?

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."

• Vitamin B5 Reference Range

  Use the slider below to see how your results affect your health.

  μg/L

  37

  147

  Your result is Normal.

  Normal results vary based on the laboratory and the method used.
• What is a vitamin B5 test?
• Why do I need a vitamin B5 test?
• What happens during a vitamin B5 test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• Is there anything else I need to know about a vitamin B5 test?

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."

• Vitamin B6 Reference Range

  Use the slider below to see how your results affect your health.

  5.3

  46.7

  Your result is Normal.

  Normal results vary based on the laboratory and the method used.
• What is a vitamin B6 test?
• Why do I need a vitamin B6 test?
• What happens during a vitamin B6 test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• Is there anything else I need to know about a vitamin B6 test?

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."

• Vitamin B7 Reference Range

  Use the slider below to see how your results affect your health.

  ng/mL

  0.05

  0.83

  Your result is Normal.

  Normal results vary based on the laboratory and the method used.
• What is a vitamin B7 test?
• Why do I need a vitamin B7 test?
• What happens during a vitamin B7 test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• Is there anything else I need to know about a vitamin B7 test?
• References

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."

• Folate Reference Range

  Use the slider below to see how your results affect your health.

  ng/mL

  2.7

  17

  Your result is Normal.

  Normal results may vary based on the laboratory and the method used.
• What is a folate test?
• Why do I need a folate test?
• What happens during a folate test?
• Will I need to do anything to prepare for the test?
• Are there any risks to the test?
• What do the results mean?
• When should I see a doctor?
• Is there anything else I need to know about a folate test?
• References

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."

• Vitamin B12 Reference Range

  Use the slider below to see how your results affect your health.

  pg/mL

  160

  950

  Your result is Normal.

  Vitamin B12 is a water-soluble vitamin. Water-soluble vitamins dissolve in water. After the body uses these vitamins, leftover amounts leave the body through the urine.
• References

Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."