8 a.m. fasting tests assess hormonal and metabolic functions, as hormone levels can vary significantly throughout the day. Testing these levels in a fasting state at 8 AM provides a baseline that helps diagnose and monitor endocrine disorders.
Cortisol levels are measured to assess adrenal gland function and diagnose conditions like Cushing's syndrome or Addison's disease.
Growth hormone (GH) and insulin-like growth factor-1 (IGF-1) tests help evaluate pituitary function and diagnose growth disorders.
Aldosterone and renin tests are performed to investigate conditions like primary aldosteronism, which affects blood pressure regulation.
Adrenocorticotropic hormone (ACTH) levels are checked to understand adrenal gland disorders, while prolactin measurements help diagnose prolactinomas and other pituitary disorders.
Dehydroepiandrosterone (DHEA) is assessed for adrenal function and androgen production.
Estrogen, luteinizing hormone (LH), testosterone, follicle-stimulating hormone (FSH), and progesterone tests are essential for evaluating reproductive health and diagnosing conditions like polycystic ovary syndrome (PCOS) and infertility.
Thyroid function is comprehensively assessed with tests for thyroid-stimulating hormone (TSH), free triiodothyronine (free T3), free thyroxine (free T4), and reverse T3. Thyroid antibodies, including Thyroid Stimulating Immunoglobulin (TSI) for Graves' disease, and Thyroid Peroxidase Antibodies (TPOAb) and Thyroglobulin Antibodies (TgAb) for Hashimoto's disease, help diagnose autoimmune thyroid conditions. Thyrotropin receptor antibodies (TRAb) are also measured to further investigate Graves' disease.