Thyroid TSH Function Test
Your thyroid may be small, but it plays a powerful role in keeping your body functioning at its best. The ICare Thyroid TSH Function Test measures Thyroid-Stimulating Hormone (TSH), one of the most important indicators of thyroid health. This simple blood test helps evaluate how well your thyroid is functioning and can identify potential thyroid disorders before they begin to significantly affect your health.
The thyroid helps regulate your metabolism, energy levels, body temperature, heart rate, mood, and weight. When it's not functioning properly, it can impact nearly every system in your body. Whether you're experiencing symptoms or simply taking a proactive approach to your wellness, the TSH Function Test provides valuable information to help you and your healthcare provider better understand your thyroid health.
With ICare's concierge mobile laboratory services, thyroid testing is convenient, accurate, and designed around your lifestyle.
What Does This Test Measure?
The Thyroid TSH Function Test measures the level of Thyroid-Stimulating Hormone (TSH) in your bloodstream.
TSH is produced by the pituitary gland and signals your thyroid to produce the hormones T3 (triiodothyronine) and T4 (thyroxine), which regulate:
Metabolism
Energy production
Body temperature
Heart rate
Weight management
Mood
Brain function
High TSH Levels
Elevated TSH levels may suggest an underactive thyroid (hypothyroidism), meaning the thyroid is not producing enough thyroid hormone.
Common symptoms may include:
Fatigue
Weight gain
Feeling cold
Dry skin
Constipation
Depression
Slowed heart rate
Hair thinning
Low TSH Levels
Low TSH levels may suggest an overactive thyroid (hyperthyroidism), meaning the thyroid is producing more hormone than your body needs.
Common symptoms may include:
Unexplained weight loss
Rapid or irregular heartbeat
Anxiety or nervousness
Tremors
Increased sweating
Difficulty sleeping
Heat intolerance
If your TSH level is outside the normal range, your healthcare provider may recommend additional thyroid testing, such as Free T4 and Free T3, for a more comprehensive evaluation.
Who Should Consider This Test?
The Thyroid TSH Function Test may be beneficial for individuals who:
Experience persistent fatigue or low energy
Have unexplained weight gain or weight loss
Notice changes in mood, memory, or concentration
Experience hair loss or thinning
Have dry skin or brittle nails
Have irregular menstrual cycles
Have a family history of thyroid disease
Are taking thyroid medication
Are pregnant or planning pregnancy
Want to include thyroid screening as part of their annual wellness evaluation
Because thyroid disorders are common and often develop gradually, routine screening can play an important role in preventive healthcare.
Why Is It Important?
Supports the diagnosis and monitoring of hypothyroidism, hyperthyroidism, and other thyroid disorders.
Preparation
No special preparation is required.
Turnaround
1-3 Business Days
Sample Type
Blood
What's Included
Physician Order
We provide the necessary doctor's order for this test.
Lab Fees
All laboratory processing fees are included in the price.
Digital Results
Secure, easy-to-read results delivered to your portal.
Important Information
How It Works
Book Online
Choose your test and checkout securely. We'll generate the order.
We Come to You
Schedule a mobile phlebotomist to visit your home or office.
Get Results
Receive your physician-reviewed results online in days.