Which test is used to check the thyroid?

The main one is TSH. If it is abnormal, free T4 and sometimes T3 are added to see whether the thyroid is slow or overactive.

Do I need to fast for a thyroid test?

No. If you already take levothyroxine, ask whether to take your pill after the blood draw that day.

How should I take my thyroid pill?

On an empty stomach with water, 30 to 60 minutes before breakfast, and at least 4 hours apart from calcium, iron or antacids.

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General medicine

Thyroid Testing & Treatment

Diagnosis and treatment of thyroid conditions (hypothyroidism and hyperthyroidism) with follow-up in Spanish.

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Thyroid function tests (TSH, T3, T4)
Diagnosis of hypo- and hyperthyroidism
Treatment and medication adjustment
Follow-up in Spanish

The thyroid is a small gland in the neck that controls how fast the body uses energy. When it runs slow or fast, the symptoms are mistaken for fatigue, stress or weight changes. A simple blood test clears up the doubt.

Which symptoms can come from the thyroid?

Slow thyroid (hypothyroidism)	Overactive thyroid (hyperthyroidism)
Fatigue and sleepiness	Nervousness or anxiety
Weight gain	Weight loss without dieting
Feeling cold, dry skin, hair loss	Feeling hot, sweating, tremor
Constipation	Palpitations
Heavy periods	Light periods

How is it diagnosed?

With TSH, the main test. If it is abnormal, free T4 and sometimes T3 are added. In some cases a neck ultrasound is ordered to check for nodules.

What is the treatment?

Hypothyroidism: a daily thyroid hormone pill. It is taken on an empty stomach with water, 30 to 60 minutes before breakfast and away from calcium or iron.
Hyperthyroidism: medications to lower the gland's activity and control palpitations; some cases need a specialist.
Follow-up: TSH is repeated about 6 to 8 weeks after each dose change.

Who should get checked?

People with symptoms, pregnant women or those planning pregnancy with a history of thyroid problems, people with relatives who have thyroid disease and patients with type 1 diabetes or other autoimmune conditions.

We are at 2912 Mangum Rd, Suite A, in northwest Houston, open every day from 9 AM to 9 PM. No insurance needed; ask for the price before your visit. We accept cash, cards and Apple Pay.

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