The minimum level of TSH that can he detected by TSH assay of the third generation thyroid function tests is which of the following?

Functional sensitivities for three generations of TSH assays: First generation: Functional sensitivity is 1-2 IU/mL Second generation: Functional sensitivity is 0.1-0.2 IU/mL Third generation: Functional sensitivity is 0.01-0.02 IU/mL Among the options more appropriate is 0.04 IU/mL Ref: Aicle: Evolution of TSH Assays: A Third Generation Viewpoint