Thyroid Health - The Top 10 Thyroid Lab Tests

Save 20% on the key thyroid lab tests. The Top 10 Thyroid Lab Tests to Ask For and What They Mean There are two primary conditions that may require a thyroid test: hypothyroidism and hyperthyroidism. Hypothyroidism occurs when your thyroid isn’t producing enough T3 and T4. Hyperthyroidism is the term for when your body produces too much thyroid hormone. Symptoms and signs of hypothyroidism Fatigue or Weakness Intolerance to cold Muscle aches and cramps  Constipation Weight gain or difficulty losing weight Poor appetite Goiter (enlarged thyroid gland) Dry, rough skin Coarse hair or hair loss Eye and face swelling Irregular or heavy menstrual periods Depression Memory loss Slowed thinking and mental activity Increased blood cholesterol levels Symptoms and signs of hyperthyroidism Nervousness, tremor, agitation Irritability Poor concentration Reduced menstrual blood flow in women Racing heartbeat or palpitations Heat intolerance Changes in bowel habits, such as more frequent bowel movements Enlargement of the thyroid gland Skin thinning Brittle hair Increase in appetite, feeling hungry Sweating If this sounds familiar you may have an undiagnosed thyroid disorder. How do you find out? You order your lab tests directly there to evaluate your thyroid health. Use Promo Code: TH20 at check out. This promotion can not be combined with other prromotions.

  • Promotion Code:
  • TH20
Most Popular
The assay may be useful in the diagnosis of nonthyroidal illness (NTI). Patients with NTI have low T3 concentrations and increased concentrations of rT3. RT3 may be useful in neonates to distinguish euthyroid sick syndrome from central hypothyroidism.

Most Popular
Total T3 measurements are used to diagnose and monitor treatment of hyperthyroidism and are essential for recognizing T3 toxicosis

Most Popular
This test is used to diagnose hyperthyroidism and to clarify thyroid status in the presence of a possible protein binding abnormality.

Most Popular

For diagnosis of hypothyroidism and hyperthyroidism.

Note: Free T4 Index (T7) will only be calculated and reported if test code code 861 (T3 Uptake) is ordered as well.


Most Popular
The free T4 are tests thelps evaluate thyroid function. The free T4 test is used to help diagnose hyperthyroidism and hypothyroidism. Free T4 is the active form of thyroxine and is usually ordered along with or following a TSH test. This helps the doctor to determine whether the thyroid hormone feedback system is functioning as it should, and the results of the tests help to distinguish between different causes of hyperthyroidism and hypothyroidism.

  • T4, Free [ 866 ]
  • TSH [ 899 ]

  • T3 Total [ 859 ]
  • T3, Free [ 34429 ]
  • T4 (Thyroxine), Total [ 867 ]
  • T4, Free [ 866 ]
  • TSH [ 899 ]

  • T3 Reverse (RT3), LC/MS/MS [ 90963 ]
  • T3 Total [ 859 ]
  • T3, Free [ 34429 ]
  • T4 (Thyroxine), Total [ 867 ]
  • T4, Free [ 866 ]
  • Thyroid Peroxidase and Thyroglobulin Antibodies [ 7260 ]
  • TSH [ 899 ]

  • T3 Reverse (RT3), LC/MS/MS [ 90963 ]
  • T3 Total [ 859 ]
  • T3, Free [ 34429 ]
  • T4 (Thyroxine), Total [ 867 ]
  • T4, Free [ 866 ]
  • Thyroid Peroxidase and Thyroglobulin Antibodies [ 7260 ]
  • TRAb (TSH Receptor Binding Antibody) [ 38683 ]
  • TSH [ 899 ]
  • TSI (Thyroid Stimulating Immunoglobulin) [ 30551 ]
     

Thyroid Peroxidase Antibodies (TPO) and Thyroglobulin Antibodies

Measurement of thyroglobulin antibodies and thyroid peroxidase antibodies (TPO) is useful in the diagnosis and management of a variety of thyroid disorders including autoimmune thyroiditis, Hashimoto's Disease, Graves Disease and certain types of goiter.

 "IMPORTANT - Please note that Quest returns values up to 900 for the Thyroid Peroxidase Antibodies test.  If tracking requires values above 900 for the Thyroid Peroxidase Antibodies, then order test TPO Antibody Endpoint (Test Code # 15116).


Most Popular
For differential diagnosis of primary, secondary, and tertiary hypothyroidism. Also useful in screening for hyperthyroidism. This assay allows adjustment of exogenous thyroxine dosage in hypothyroid patients and in patients on suppressive thyroxine therapy for thyroid neoplasia.

TSI stands for thyroid stimulating immunoglobulin. TSI tells the thyroid gland to swell and release excess amounts of thyroid hormone into the blood.