To evaluate fertility issues function of reproductive organs ovaries or testicles or pituitary function In children to evaluate early or delayed sexual maturation puberty Specimen:A blood sample drawn from a vein in your arm sometimes a random urine sample or 24-hour urine collection may be taken When To Get Tested: For women when you are having difficulty getting pregnant or are having irregular or absence of menstrual periods For men when your partner cannot get pregnant or you have a low sperm count low muscle mass or decreased sex drive When your healthcare provider thinks that you have symptoms of a pituitary disorder or hypothalamic disorder When a health practitioner suspects that a child has delayed or earlier than expected sexual maturation Test Preparation:None but the timing of a woman s sample will be correlated with her menstrual cycle Normal Test Result: 0.2 ng/dL to 0.5 ng/dL.

To help evaluate thyroid gland function to diagnose thyroid disease including hyperthyroidism and determine the cause to monitor effectiveness of treatment of a thyroid disorder Specimen:A blood sample taken from a vein in your arm When To Get Tested: When you have an abnormal TSH particularly with a normal free T4 result and or signs and symptoms of hyperthyroidism Test Preparation:None needed however certain medications can interfere with the free T3 and total T3 tests so tell your health practitioner about any drugs that you are taking Normal Test Result: 0.9 nanograms per deciliter (ng/dL) to 2.3 nanograms per deciliter (ng/dL), or 12 to 30 picomoles per liter (pmol/L)

To help diagnose and monitor autoimmune thyroid diseases and to distinguish these from other forms of thyroid disease to help guide treatment decisions Specimen:A blood sample drawn from a vein in your arm When To Get Tested: When you have an enlarged thyroid goiter and or when your other thyroid tests such as total or free T3 free T4 and TSH indicate thyroid dysfunction along with a thyroglobulin test when your healthcare provider is using it as a monitoring tool at intervals recommended by your healthcare provider when you have a known autoimmune thyroid disorder Test Preparation:None Normal Test Result: TPO antibody: The measured serum level should be less than 9 IU/mL. Anti-Tg antibody: The measured serum level should be less than 4 IU/mL. Thyroid-stimulating immunoglobulin antibody (TSI): This value should be less than 1.75 IU/L.

To screen for and help diagnose thyroid disorders to monitor treatment of hypothyroidism and hyperthyroidism Specimen:A blood sample drawn from a vein in your arm or from pricking the heel of an infant When To Get Tested: For screening Newborn screening is widely recommended however there is no consensus within the medical community as to the age adult screening should begin or whether screening should be done For monitoring treatment as directed by your healthcare provider Otherwise when a person has symptoms of hyperthyroidism or hypothyroidism and or an enlarged thyroid Test Preparation:None needed however certain medications can interfere with the TSH test so tell your health practitioner about any drugs that you are taking If you take thyroid hormone as treatment for thyroid disease it is recommended that your blood sample be drawn before you take your dose for that day Normal Test Result: from 0.4 mIU/L to 4.0 mIU/L for those with no symptoms of an under- or over-active thyroid

To help diagnose and monitor autoimmune thyroid diseases and to distinguish these from other forms of thyroid disease to help guide treatment decisions Specimen:A blood sample drawn from a vein in your arm When To Get Tested: When you have an enlarged thyroid goiter and or when your other thyroid tests such as total or free T3 free T4 and TSH indicate thyroid dysfunction along with a thyroglobulin test when your healthcare provider is using it as a monitoring tool at intervals recommended by your healthcare provider when you have a known autoimmune thyroid disorder Test Preparation:None Normal Test Result: