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Thyroid stimulating hormone (TSH)
CPT4 code
Name of the Procedure:
Thyroid Stimulating Hormone (TSH) Test
Summary
The Thyroid Stimulating Hormone (TSH) test is a blood test that measures the level of TSH in the bloodstream. This hormone is produced by the pituitary gland and stimulates the thyroid gland to produce hormones that regulate the body's metabolism.
Purpose
The TSH test is used to assess thyroid function and diagnose thyroid disorders, such as hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid). It helps in determining whether the thyroid gland is working properly.
Indications
- Symptoms of thyroid dysfunction such as fatigue, weight changes, depression, or anxiety.
- Monitoring thyroid replacement therapy in patients with known thyroid conditions.
- Assessing thyroid function in patients with a family history of thyroid disorders.
Preparation
- No special preparation is typically required.
- Inform your healthcare provider about any medications or supplements you are taking, as some can affect the results.
Procedure Description
- Blood Draw: A small amount of blood is drawn from a vein in your arm using a needle.
- Collection: The blood sample is collected into a vial or tube.
- Laboratory Analysis: The sample is sent to a lab where it is analyzed for TSH levels.
Duration
The blood draw itself usually takes less than 5 minutes.
Setting
The procedure is performed in a medical office, clinic, or hospital laboratory.
Personnel
A phlebotomist or nurse typically performs the blood draw.
Risks and Complications
- Minor discomfort or pain at the puncture site.
- Bruising or slight bleeding.
- Rarely, dizziness or fainting.
Benefits
- Provides valuable information about thyroid function quickly.
- Helps diagnose thyroid disorders and guides treatment decisions.
Recovery
- No significant recovery time is required.
- You can return to normal activities immediately.
- Keep the puncture site clean and dry.
Alternatives
- Free T4 (Thyroxine) Test: Measures unbound T4 hormone in the blood.
- Free T3 (Triiodothyronine) Test: Measures unbound T3 hormone in the blood.
- Thyroid Ultrasound: Imaging test for structural evaluation of the thyroid gland.
Patient Experience
- Mild discomfort from the needle stick.
- Minimal pain, similar to any routine blood test.
- Instructions for comfort include staying hydrated and relaxing during the blood draw.