A serum TSH result ... or thyroid hormone resistance be considered. Manufacturers that market TSH tests with differing sensitivities are urged to discontinue marketing the less sensitive product.
A blood test measuring thyroid-stimulating hormone levels is often the first step. If results come back abnormal or there are noticeable lumps or pain, imaging tests like a neck ultrasound may be ...
[202] TSH assay functional sensitivity is defined by the 20% between-run coefficient of variation (CV) determined by the recommended protocol (see Guideline 20). Guideline 20. Protocol for TSH ...