[Determining blood parameters FT3, FT4, T, E2 and cortisol to explore nature of cold syndrome and heat syndrome].

Objective: To explore the relationship between the levels of free triiodothyronine (FT3), free thyroxine (FT4), cortisol (CO), testosterone (T), serum estradiol (E2) and Cold Syndrome and Heat Syndrome in traditional Chinese medicine.

Methods: The blood levels of FT3, FT4, T, E2, CO in groups of sthenic Heat (SH), sthenic Cold (SC), asthenic Heat (AH) and asthenic Cold (AC) and the healthy control group were measured. The number of cases in each group was 50.