Thyroid hormone treatment | Bioidentical Hormones http://www.holtorfmed.com/topics/thyroid/... Holtorfm medical group specialize in thyroid optimization with T4/T3 combination’s and straight T3 and treat all types of hypothyroidism, including standard (primary), secondary (pituitary dysfunction), tertiary (hypothalamic), which result in normal or low TSH with sub-optimal T4 and T3 levels, low T3 syndromes, poor conversion of T4 to T3, high reverse T3 (Wilson’s syndrome), thyroid receptor resistance syndromes, which results in hypothyroidism with normal thyroid blood levels, difficult thyroid cases