You might be more familiar with the term 'heel prick test' as it was formerly known, but the 'newborn blood spot test' is ...

Hypothyroidism occurs when the thyroid gland is underactiive and does not produce enough thyroxine. Symptoms can include fatigue, weight gain, constipation, dry skin, excessive hair fall, menstrual ...

Levothyroxine sodium is the second-most prescribed drug in the United States, with approximately 25 million people using either Synthroid or generic levothyroxine to manage their hypothyroidism (low ...

Thyroxine (T4) is the principal hormone secreted by the thyroid gland. All the T4 in the circulation is derived from thyroidal secretion. In contrast, only about 20% of circulating ...

Ensuring that during the test process, the amount of thyroid hormone released from serum binding proteins is the same as that released in the presence of the calibrator diluent.

However, I have not been able to find any evidence in the scientific literature that St John's Wort cannot be taken alongside thyroxine. This makes perfect sense when you consider that thyroxine ...

Most people will need a blood test at some point in their lives. Blood tests are part of routine health screenings. They are used to check organ function and immune system activity, to diagnose ...