Debrief: what this pattern can and cannot tell you

A paired stimulating-hormone and target-gland-hormone result set is supported evidence for localization: it narrows the differential toward the target gland or toward the pituitary/hypothalamus. It is not, by itself, an independent diagnosis. Current professional guidance frames adrenal insufficiency, hypopituitarism, and hypothyroidism this way.

The exact reference interval for any stimulating or target hormone, any disease-specific decision cutoff, and any specimen stability window are method- and lab-dependent. Use the current local reference interval, the current manufacturer instructions for use, and, where indicated, a dynamic stimulation or suppression test.

A single isolated value without its pair, a free-hormone assay presumed immune to interference (it is not; it is a different assay format with its own susceptibilities), or a pattern without clinical correlation cannot establish a specific disease or treatment plan.

Treat every stimulating/target-hormone pair as a direction problem first, ask what timing, binding proteins, illness, or interference could be doing to that direction, and hand forward a localization, and the single most useful next step, rather than a diagnosis.