T4

This test measures the amount of thyroxine, or T4, in patient blood. T4 is one of two major hormones produced by the thyroid gland (the other is called triiodothyronine, or T3).

If the thyroid gland does not produce sufficient T4, due to thyroid dysfunction or to insufficient TSH, then the affected patient experiences symptoms of hypothyroidism such as weight gain, dry skin, cold intolerance, irregular menstruation, and fatigue. If the thyroid gland produces too much T4, the rate of the patient’s body functions will increase and cause symptoms associated with hyperthyroidism such as increased heart rate, anxiety, weight loss, difficulty sleeping, tremors in the hands, and puffiness around dry, irritated eyes.

Product Specifications:

• Product code: GDB71225
• Calibrators: 0 , 2.0, 5.0, 10.0, 15.0, 25.0 µg/dl
• Sample: 25 µl
• Sensitivity: 0.04 µg/dl
• Total Time: 75 Minutes
• Shelf Life: 18 Months