Active vitamin B12 | Products | LOUNA Lab
My cart

Active vitamin B12

S -B12-TC2

€ 77.90

Vitamin B12 is particularly necessary for the formation of red blood cells and, together with folic acid, DNA. It also supports the functioning of the brain and nervous system, and it is involved in carbohydrate and protein metabolism.

We get vitamin B12 from products of animal origin, such as liver, fish, eggs, meat, and dairy products. Stomach cells produce a carrier protein called intrinsic factor (IF), to which vitamin B12 binds and with which it is absorbed in the small intestine. From the small intestine, vitamin B12 continues its journey through the bloodstream to the tissues, again bound to the carrier protein.

The vitamin B12 blood test indicates the total concentration of vitamin B12 in the body. A vitamin B12 sufficiency in the body, however, is more accurately indicated by the test of active vitamin B12 (S-B12-TC2). The abbreviation “TC” refers to the transcobalamin in the vitamin B12 carrier protein.

Vitamin B12 deficiency is primarily a concern of the elderly. One in ten Finns aged over 65 have been found to suffer from vitamin B12 deficiency. It is less common among younger people. Vitamin B12 deficiency is easier to prevent than treat.

When is a good time to measure vitamin B12 levels?

Often, the need to examine the concentration of vitamin B12 arises in connection with the nervous system or anaemia with elevated red blood cell volume (E-MCV).

It is a good time to have the test done if you experience the following symptoms, which are possibly caused by vitamin B12 deficiency:

  • Muscle weakness
  • Sensory disturbances
  • Memory disturbances
  • Pain in the upper abdomen
  • Depression
  • Disorientation, memory loss
  • Dizziness, fatigue, weakness
  • Paleness
  • Fast heart rate
  • Shortness of breath

Less common symptoms include:

  • Tongue infection
  • Weight loss
  • Yellowness of the skin
What does a vitamin B12 test measure?

The body stores vitamin B12 in the liver for approximately 3–5 years, so it can take months, even years, before the symptoms suggesting vitamin B12 deficiency occur. On the other hand, children have not yet developed a stock of vitamin B12, so vitamin B12 deficiency manifests itself earlier.

Normally, the result is: 

Reference values:

  • S-B12-TC2 is 138 - 652 pmol/l

Please contact your physician or other healthcare professional if you suspect an illness or need help interpreting the results.

Read more about defining reference values.

People who have received vitamin B12 treatment have been found to have elevated levels of vitamin B12. If the excessive intake of vitamin B12 is caused by vitamin supplements, this is not dangerous. Therefore, you should have the blood test taken before receiving the vitamin B12 treatment dose. Elevated vitamin B12 levels can also be caused by liver and kidney diseases or a malignant tumour.

Usually, vitamin B12 deficiency is caused by absorption problems. Decreased gastric acid concentration and an increase in stomach pH weaken the absorption of vitamin B12. Gastric acidity can be decreased by an autoimmune disease or a helicobacteria-induced stomach infection, or gastritis. Some medications, such as antacids and the diabetes drug metformin, as well as diseases of the small intestine (coeliac disease), can weaken the absorption of vitamin B12.

Low vitamin B12 levels can also be caused by diet. Vitamin B12 only exists in high concentrations in products of animal origin, and if a person following a vegan diet does not take it as a supplement, its concentration in the blood decreases.

The secretion of vitamin B12 from the kidneys increases in connection with high alcohol consumption.

Decreased vitamin B12 levels can also occur among those following a vegetarian diet. Vitamin B12 deficiency causes anaemia and nervous symptoms, and the blood platelet and white blood cell counts are lower than normal. It is typical of anaemia caused by vitamin B12 deficiency that the red blood cells are unusually large. This type of anaemia is known as megaloblastic anaemia.

  • Complete blood count (CBC), shows the number of red and white blood cells, number of platelets, and cell type (3696 B-TVK)
  • Homocysteine is connected to clotting events and blood clots (1867 P-Hcyst)
  • Folic acid has effects on the well-being of the brain and cells (1416 fS-Folaat)

Preparation

Fasting is not required

This examination does not require fasting

This test is also included in these packages:

You can purchase this test as a single test or as a part of the following packages:

package

Blood Values that Cause Fatigue

The LOUNA Blood Valuess that Cause Fatigue package is designed for anyone who suffers from gloominess or fatigue.


€ 128.00

package

Iron Levels

The LOUNA Iron Levels test package is designed to measure the important iron levels that affect your well-being. The test package includes e.g. measurement of ferritin, reticulocytes, folate and vitamin B12.


€ 48.00

package

ON SALE

The Active Woman’s Health Values

The package has been tailor-made to examine the impact of physical strain on an active woman’s body, as well as the performance and resilience of the body.


€ 125.00

package

Anaemia and Iron Levels

The LOUNA Anaemia and Iron Levels package measures the iron levels in your body and provides you with useful information about a suitable diet.


€ 136.00

package

Health Values of a Vegetarian and Vegan

The LOUNA Health Values of a Vegetarian and Vegan package has been designed for those following a vegetable-rich or vegan diet.


€ 98.00

package

BEST SELLER

Woman’s Health Values

The LOUNA Woman’s Health Valuess package measures the blood counts that particularly affect the well-being of women’s bodies.


€ 136.00

package

Important Vitamin and Trace Element Values

Look after yourself by ordering the Important Vitamin and Trace Element Values package.


€ 174.00

package

Woman's Fertility Values

Ensure your blood counts are optimal by ordering a laboratory package designed for women planning a pregnancy.


€ 194.00

package

Important Vitamin Values

Ensure your vitamins counts are at a healthy level and that you have enough energy to handle everyday challenges.


€ 68.00

package

ON SALE

The Active Man’s Health Values

The package has been tailor-made to examine the active man’s performance and resilience, as well as the impact of physical strain on the body.


€ 125.00

package

BEST SELLER

Man’s Health Values

The LOUNA Man’s Health Values package measures the blood counts that particularly affect the well-being of men’s bodies. Package measures for example testosterone and PSA.


€ 136.00