FT3

Triiodothyronine

T3 Free

T3 Free (Triiodothyronine) is a hormone produced by the thyroid gland and plays an important role in the body's metabolism. A hormonal imbalance in the thyroid gland can lead to thyroid disorders.

What is T3 Free (Triiodothyronine)?

Free T3 (triiodothyronine) is a measurement of the free triiodothyronine, i.e. the triiodothyronine that is not bound to proteins in the blood. T3 is another hormone produced by the thyroid gland, and it is important for regulating metabolism and energy levels in the body. T3 is the active hormone and is more potent than T4, and it is important for the body to function normally. A too high or too low level of free T3 can indicate thyroid problems such as hyperthyroidism or hypothyroidism.

Why analyze T3 Free (Triiodothyronine)?

Measurement of free T3 is used in conjunction with measurement of T4 Free to diagnose and monitor thyroid problems.

One may need to analyze T3 freely to get a more complete picture of the thyroid gland's hormone production and to be able to investigate and follow up thyroid problems. Free T3 is the active hormone, so it is important to know how much of it is available in the body.

It can be difficult to determine if there is a thyroid problem by just looking at T4 levels because T4 can be bound to proteins and therefore not available to the body. By analyzing both T4 and T3 freely, for example, a doctor can get a more complete picture of the thyroid gland's hormone production and determine if there is a problem.

Another reason to analyze T3 freely is that it can help distinguish between different types of thyroid problems. For example, if the TSH (thyrotropin) level is high, it may indicate hypothyroidism, but if the free T3 level is normal, it may indicate that the problem is in the hypothalamus or pituitary gland instead of the thyroid gland.

Overall, measurement of free T3 provides more accurate and relevant information about thyroid hormone production and can help the doctor make a correct assessment and choose the right treatment.

Note that it is important that a doctor looks at all blood test results and may also consider other factors such as symptoms and medical history to make an accurate assessment.

What can a low value of Free T3 (Triiodothyronine) mean?

A low free T3 value can mean that the thyroid gland does not produce enough triiodothyronine (T3), a hormone that regulates metabolism in the body. This can be caused by an underfunctioning of the thyroid gland, so-called hypothyroidism.

What can a high value of T3 Free (Triiodothyronine) mean?

A high value of free T3 can mean that the thyroid gland is producing too much triiodothyronine (T3), a hormone that regulates metabolism in the body. This can be caused by an overfunctioning of the thyroid gland, so-called hyperthyroidism.

Tests containing the marker T3 Free

Hormone tests
FT3
Thyroid test T3

T3 (free triiodothyronine)

1 marker
Blood sample
How does the blood test take place?
Sampling for this test is done via a venous blood sample. The sample is usually taken from a vein in the crook of the elbow and is performed by trained healthcare professionals. How much blood you are allowed to give depends on the number of health markers to be analyzed. The sampling usually takes a few minutes.
  • Measures your levels of free T3 (triiodothyronine).
  • Get insight into your thyroid status.
  • Detects disturbance in your thyroid hormones
  • Indication of hyperthyroidism or hypothyroidism.

89 kr

Health checks
Hormone test woman

Hormonal balance plus

  • Comprehensive health check for hormonal balance.
  • Extended hormone analysis for you as a woman.
  • Get deeper insight into your hormonal levels.

1495 kr

Hormone analysis woman

Hormonal balance

  • Health check for hormonal balance.
  • Hormonal analysis for you as a woman.
  • Get insight into your hormonal levels.

729 kr

Health check - Female

Woman

49 Biomarkers
Blood sample
How does the blood test take place?
Sampling for this test is done via a venous blood sample. The sample is usually taken from a vein in the crook of the elbow and is performed by trained healthcare professionals. How much blood you are allowed to give depends on the number of health markers to be analyzed. The sampling usually takes a few minutes.
Fasting
Fasting

This test requires you to fast before sampling. Fasting means that you are not allowed to eat or drink anything for at least 10 hours before your scheduled time for sampling. However, a glass of water is fine to drink during the fast. Any medications are taken as usual unless your doctor has given other instructions.

  • Health check designed for women.
  • Includes a total of 49 health markers.
  • Gives you information about your overall health.
  • Can identify early signs of health problems.

1795 kr

General health check

Health check Large

  • Health check - Large.
  • Analysis of 53 health markers.
  • Helps you identify outliers.
  • A doctor's report is included in the health check.

2095 kr

Weight check

Health check weight loss

  • Identifies barriers to weight loss.
  • Get increased insight into your metabolism.
  • Health check before or during weight loss.

795 kr

Ordinary health check

Standard

24 Biomarkers
Blood sample
How does the blood test take place?
Sampling for this test is done via a venous blood sample. The sample is usually taken from a vein in the crook of the elbow and is performed by trained healthcare professionals. How much blood you are allowed to give depends on the number of health markers to be analyzed. The sampling usually takes a few minutes.
  • Analysis of markers that affect the liver and kidneys.
  • Analysis of markers that affect the heart and blood vessels.
  • Control of the risk of possible diabetes.

795 kr

Thyroid hormone test - Extended

Thyroid test plus

5 Biomarkers
Blood sample
How does the blood test take place?
Sampling for this test is done via a venous blood sample. The sample is usually taken from a vein in the crook of the elbow and is performed by trained healthcare professionals. How much blood you are allowed to give depends on the number of health markers to be analyzed. The sampling usually takes a few minutes.
  • Measures your levels of the thyroid hormones T3, T4 and TSH.
  • Analysis of TPO antibodies (thyroperoxidase antibodies).
  • Analysis of TRAK thyroid-stimulating hormone receptor antibodies.

845 kr

Thyroid hormone test

Thyroid test

3 Biomarkers
Blood sample
How does the blood test take place?
Sampling for this test is done via a venous blood sample. The sample is usually taken from a vein in the crook of the elbow and is performed by trained healthcare professionals. How much blood you are allowed to give depends on the number of health markers to be analyzed. The sampling usually takes a few minutes.
  • Thyroid test that measures three different thyroid hormones.
  • Analysis of the thyroid hormones T3, T4 and TSH.
  • Gives you insight into a possible imbalance of your thyroid hormones.
  • Identifies whether you have an underactive or overactive thyroid.

219 kr

Sport performance health check

Sport

37 Biomarkers
Blood sample
How does the blood test take place?
Sampling for this test is done via a venous blood sample. The sample is usually taken from a vein in the crook of the elbow and is performed by trained healthcare professionals. How much blood you are allowed to give depends on the number of health markers to be analyzed. The sampling usually takes a few minutes.
  • Health check for those who exercise actively.
  • Analysis of markers that affect your performance.
  • Gives you the conditions to optimize your health.

1595 kr