Table 1 Proposed "HPD" classification
Facet | Possible values |
|---|---|
Hypothalamic-pituitary dysfunction or adaptation ("H") | H0: Normal TSH secretion, adequate to T4 level H1: Thyrotropic insufficiency |
Impaired plasma protein binding ("P") | P0: Normal binding to plasma proteins P1: Normal binding with reduced levels of plasma proteins P2: reduced binding to proteins within normal levels P3: reduced binding and reduced protein levels |
Reduced deiodation ("D") | D0: Normal deiodation D1: Reduced deiodation activity |