Loss of Taste 

Taste refers to the ability to sense sweet, salty, bitter and sour characteristics. It is a rudimentary sense and virtually impossible to lose completely. It is often confused with flavour, which is the combination of taste (20%) and smell (80%). When patients complain of a taste disturbance, a smell disorder is very frequently the actual problem.

Diagnostics

Blood screen

UPSIT olfactory (smell) test or Mini Olfactory UPSIT

Clinical testing with direct application of various sweet, salty, bitter and sour tastants.