TSH (THYROID STIMULATING HORMONE)

The TSH Total test is used to measure the amount of TSH in the blood. Low levels of TSH indicate hyperthyroidism and high TSH levels indicate hypothyroidism. 

Hyperthyroidism happens when the thyroid gland produces too much hormone. It’s also called overactive thyroid. High levels of thyroid hormones in the blood can cause symptoms such as weight loss, anxiety, muscle weakness, racing heart, or heat intolerance. 

Hypothyroidism happens when the thyroid gland doesn't produce enough hormone. It‘s also called underactive thyroid. Low levels of thyroid hormones in the blood can cause symptoms such as weight gain, fatigue, enlarged thyroid gland, irregular menstrual periods, cold intolerance, or depression. 

The TSH Total test is most commonly used to  

• Diagnose thyroid disorders such as hypothyroidism, or hyperthyroidism 
• Monitor treatment efficacy of thyroid disorders 
• Screen for thyroid diseases during pregnancy 
• Screen for thyroid diseases in newborns 
• Evaluate a thyroid nodule or goitre 

A healthcare professional will draw a blood sample from a vein in the arm. There are no special preparations required for the TSH Total test though your doctor may instruct you if any specific preparations are required for the test. 

The TSH Total test is a safe, standard test with very minimal risks involved such as 

• Bleeding 
• Light headedness 
• Infection 
• Bruising 

The TSH Total test normal ranges may vary slightly among different laboratories.  

The doctor will evaluate the results based on health, gender, age, body weight, and other factors.