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Free T4 (FT4) Blood Test

Quick Overview

This private blood test for Free T4 in London has a guaranteed turnaround time of 1 working day or less and tests for Free T4 only.

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£147.15

Additional Information

Lab Code -FT4-
Test Name Free T4 (FT4) Blood Test
Profile or Test? Single Test
Test Inclusions Free T4 (FT4) Blood Test Only
Pathology Sample Blood
Target Turn Around Time in working days 1 Working Day or less
Laboratory Notes For diagnosis of hypothyroidism and hyperthyroidism.
Special Instructions No further Special Instructions. Please contact us if you have any questions.
GP Referral Yes Included
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Free T4

FT4 (free thyroxine) is the active form of thyroxine, released from the thyroid gland in the neck. Its role is to control metabolism - release of energy from all cells of the body. A lack of thyroxine leads to, for example, tiredness and weight gain, whereas an excess will lead to weight loss, rapid heart rate and anxiety. It is generally believed that this level (FT4) is the most reliable indicator of thyroid status - ie whether the gland is over-active (hyperthyroidism) or underactive (hypothyroidism).

Thyroid Health Symptoms

 

Hyperthyroid symptoms

 

Weight loss with increased appetite

Warm/clammy skin

Shortness/loss of breath

Feeling warm and sweating excessively

Feeling hyperactive

Rapid heartbeat

Insomnia

Osteoporosis

Raised libido

Irregular bowel movements

Diarrhoea

Thin hair

Fertility problems

Irritability

Hypothyroid symptoms

Fatigue

Feeling cold constantly

Weight gain and/or difficulty losing weight

Brain fog

Issues with Breathlessness

Low basal temperature

Insomnia

Hair loss

Raised cholesterol

Low basal temperature

Dry hair and skin

Loss of libido

Constipation

Depression

Mood swings

Fertility problems

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