Thyroid test panel (FT4, TSH): price 66 zł

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Podmiot leczniczy, nr księgi RPWDL 000000229528
700 punktów pobrań krwi, badań diagnostycznych i konsultacji specjalistycznych
Badania i konsultacje realizujemy samodzielnie oraz przez podwykonawców
Wynik online, bez skierowania
Działamy od 2020 r., kontynuacja pierwszego w Polsce internetowego sklepu z badaniami (sklep.etermed.pl, od 2013)

Original price was: 95,00 zł.Current price is: 66,00 zł. Oszczędzasz 30%!

Najniższa cena z 30 dni przed obniżką: 95,00 zł

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The panel includes: TSH, FT4

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Category: Organ function assessment packages

Opis produktu

Whereany sample collection centre listed in the basket

Results turnaround timeup to 2 working days

Samplevenous blood (serum)

Preparationin the morning, fasting; take levothyroxine after sample collection; stop biotin 2–3 days beforehand

What this panel is for

TSH (the pituitary hormone that controls the thyroid) and FT4 (free thyroxine, the main thyroid hormone) are a pair of tests sufficient to diagnose most thyroid disorders and monitor treatment. TSH responds first and is the most sensitive indicator: it rises when the thyroid is underactive and falls when it is overactive. FT4 shows whether the disorder is overt or still subclinical and detects the rare condition of secondary (pituitary) hypothyroidism, in which TSH does not rise. Recommended monitoring: 6–12 weeks after a medicine dose change, then annually.

When to consider this test

tiredness, weight gain, feeling cold, dry skin, constipation or low mood (suspected hypothyroidism),
weight loss, palpitations, hand tremor, nervousness, insomnia or diarrhoea (suspected hyperthyroidism),
monitoring treatment with levothyroxine or antithyroid medicines,
planning a pregnancy or pregnancy (TSH in the first trimester), menstrual irregularities or infertility,
unexplained high cholesterol, treatment-resistant depression or atrial fibrillation,
a family history of thyroid disease, age over 60, or treatment with amiodarone, lithium or interferon.

How to prepare

Attend in the morning after fasting for 8–12 hours, drinking only water; TSH follows a daily rhythm and may be lower in the afternoon.
Take levothyroxine (Euthyrox, Letrox) after sample collection.
Stop high-dose biotin for 2–3 days; it distorts TSH and FT4 results obtained using immunoassays.
Avoid testing during an acute infection or in the first few weeks after a serious illness; results may be temporarily abnormal.

Understanding your result

TSH is reported in mIU/l (approximately 0,3–4,2 mIU/l in adults according to Mayo Clinic Laboratories; doctors use lower thresholds in pregnancy), and FT4 in pmol/l or ng/dl. Compare your result with the reference range on the report.

TSH	FT4	What it usually means
within range	within range	normal thyroid function
raised	within range	subclinical hypothyroidism; repeat testing after 6–12 weeks, anti-TPO antibodies
raised	low	overt hypothyroidism (most commonly Hashimoto’s thyroiditis); levothyroxine treatment
low	within range	subclinical hyperthyroidism; FT3, TRAb, ultrasound, monitoring
low	raised	overt hyperthyroidism (Graves’ disease, an autonomous thyroid nodule); endocrinology assessment
low or within range	low	secondary hypothyroidism of pituitary origin; pituitary investigations

A single abnormal TSH result returns to normal spontaneously in a substantial proportion of people, so the doctor usually repeats the test before starting treatment. The result is interpreted alongside symptoms and ultrasound findings.

Other tests to consider

For abnormal TSH: anti-TPO, anti-TG; for hyperthyroidism, FT3 and TRAb; conveniently combined in the thyroid test panel+ (TSH, FT4, FT3, anti-TPO, anti-TG). Read more: an article on hypothyroidism at Badania-Medyczne.pl.

Frequently asked questions

Is TSH alone sufficient?

Usually, for screening someone without symptoms. Including FT4 in the panel immediately distinguishes a subclinical disorder (abnormal TSH, normal FT4) from an overt disorder (both abnormal) and detects rare hypothyroidism of pituitary origin (low or normal TSH with low FT4), which TSH alone will not reveal.

Should I take Euthyrox before or after sample collection?

After sample collection. Taking the tablet before the test raises FT4 for several hours. TSH is usually checked 6–8 weeks after a dose change.

When should FT3 and antibody tests be added?

When hyperthyroidism is suspected (FT3 and TRAb), when TSH is raised or there is a family history of Hashimoto’s thyroiditis (anti-TPO, anti-TG), or when planning a pregnancy. In these cases, the extended thyroid panel with five tests is more suitable.

Sources: ALAB laboratoria, Thyroid panel (preparation, levothyroxine after sample collection, biotin, TSH/FT4 interpretation, monitoring after 3 months); Mayo Clinic Laboratories, Thyroid-Stimulating Hormone-Sensitive, Serum (TSH reference ranges by age, subclinical hypothyroidism and hyperthyroidism). For information only; does not replace medical advice.