Vitamin B12 Test
A B12 blood test is a simple yet very important test. It measures the level of vitamin B12 in your bloodstream. This vitamin plays a vital role in maintaining a healthy nervous system, producing red blood cells, and supporting DNA synthesis. A B12 deficiency is very common and can lead to various health problems, including fatigue, weakness, memory issues, and other neurological disorders.
Why Is Vitamin B12 Important
Vitamin B12 (cobalamin) is a water-soluble vitamin that plays a major role in the formation of red blood cells, nervous system health, neurological function, heart health, energy metabolism, and DNA synthesis. It is also needed for proper cell division and function.
This nutrient is very important because your body cannot make healthy red blood cells, or repair and regenerate cells without it.
Signs You Might Need A B12 Blood Test
A B12 deficiency is extremely common and can develop gradually. Symptoms include:
A sore, red tongue
Pale or jaundiced skin
Chronic fatigue or weakness
Shortness of breath or dizziness
Memory issues or difficulty concentrating
Numbness or tingling in the hands or feet
Who Is More At Risk Of Vitamin B12 Deficiency?
The following groups of people may be at higher risk of developing a deficiency:
Older adults.
Those who have undergone weight loss surgery.
Vegans or vegetarians (since B12 is primarily found in animal products).
People with digestive disorders (like celiac disease or Crohn's disease).
Individuals who have a health condition that affects nutrient absorption.
Core Blood Markers
Your blood sample is analysed in a laboratory to determine your current Serum Vitamin B12 levels, typically measured in picograms per milliliter (pg/mL) or nanograms per liter (ng/L).
PRICING
Vitamin B12 Test
Initial Consultation: Free
Blood Draw Fee: This fee is in addition to the cost of all blood tests taken face-to-face at Healand Clinic: £30
Home Nurse Blood Draw Fee: If you opt to have a nurse visit your home to draw your blood sample, this is carried out via our partner service via our laboratory, which incurs a fee of £60
Pre-Test Information
You usually do not need to fast to take a Vitamin B12 Test unless your healthcare provider tells you otherwise. However, be sure to inform your healthcare provider about any vitamin B12 supplements you are taking, as these can impact your test results.
Patients must be over the age of 18
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FAQs
What symptoms should prompt me to get a B12 blood test?
What does a low B12 level mean?
Low B12 levels often indicate a deficiency, which can result from poor dietary intake, malabsorption issues, certain medical conditions (like pernicious anemia or gastrointestinal disorders), or medications that affect vitamin B12 absorption. A deficiency can lead to fatigue, nerve damage, anemia, and cognitive decline.
What are the possible causes of a B12 deficiency?
Common causes include a vegan or vegetarian diet (which lacks animal-based foods), certain digestive disorders (such as celiac disease or Crohn’s disease), medications (like proton pump inhibitors or metformin), and conditions that impair B12 absorption (such as pernicious anemia or atrophic gastritis).
What is considered a normal B12 level in the blood?
Normal B12 levels typically range from 190 to 900 picograms per milliliter (pg/mL), but this can vary slightly depending on the laboratory. Levels below 190 pg/mL often indicate a deficiency, while levels above 900 pg/mL may suggest excess B12, which can be linked to certain health conditions.
How often should I get a B12 blood test?
If you’re at risk for B12 deficiency (e.g., older adults, vegetarians, or those with digestive disorders), regular monitoring may be recommended. For most people, a B12 test is only needed if there are symptoms of a deficiency or if your healthcare provider suspects an underlying issue. Generally, a yearly check-up with your doctor can help track B12 levels as part of routine health screenings.
