What does low TSH and high T3 and T4 mean?

T3 and T4 Interpretations A low TSH and high T4 generally indicates hyperthyroidism. A high TSH and low T4 indicates primary hypothyroidism (due to a thyroid disease).

Can too much thyroid hormone cause dizziness?

Thyroid disease: Abnormalities of the thyroid may also cause dizziness as a symptom. Hyperthyroidism (too much thyroid hormone) may cause palpitations, shortness of breath, and lightheadedness.

What are the symptoms of low TSH and high T4?

Symptoms

• Fatigue.
• Increased sensitivity to cold.
• Constipation.
• Dry skin.
• Weight gain.
• Puffy face.
• Hoarseness.
• Muscle weakness.

What does low TSH and high T3 mean?

A low TSH with normal free T4 and T3 levels is consistent with subclinical hyperthyroidism. Some patients with nodular goiter and Graves’ disease, particularly early in the disease course, will have predominant elevations in T3 due to increased conversion of T4 to T3 and a disproportionate increase in T3 secretion.

What happens when your T3 and T4 levels are low?

If there are low T4 and T3 in the blood, more thyroid-stimulating hormone (TSH) is produced to boost T4 levels. This is why an underactive thyroid gland is associated with TSH levels above the normal reference range. 5

What are the symptoms of hypothyroidism and high T3?

Hypothyroidism and High T3 Case Study Background. This case study is a 64 year old post menopausal female experiencing many thyroid symptoms including: Excess Abdominal Fat. Hypertension. Low Body Temperature. Always Cold. Thinning Eyebrows. Restless Sleep.

What does it mean when your TSH levels are low?

Therefore, if your blood test readings for TSH show up lower than 0.4, you have low TSH levels. Doctors will then run further tests to check free T4 and possible free T3 in blood serum. If your TSH levels are low it could mean that you have hyperthyroidism because your thyroid is probably producing excess amounts of T3 and T4 hormones.

Can a thyroid nodule cause too little T3 and T4?

Nodules or cysts in the thyroid gland can affect its function and cause too little T4 and T3 to be produced. This has the effect of increased secretion of TSH which can cause levels to increase above 4.0 mIU/L. The journal Medical Clinics of North America reports that testing for high levels of TSH is essential in monitoring thyroid nodules.