<prompt> The minimum level of TSH that can he detected by TSH assay of the third generation thyroid function tests is which of the following?0.4 lUml0.04 IUml0.004 lUml4 IUml  <response>: Functional sensitivities for three generations of TSH assays: First generation: Functional sensitivity is 1-2 IUmL Second generation: Functional sensitivity is 0.1-0.2 IUmL Third generation: Functional sensitivity is 0.01-0.02 IUmL Among the options more appropriate is 0.04 IUmL Ref: Aicle: Evolution of TSH Assays: A Third Generation Viewpoint 