The main method of diagnosis in Chinese Medicine is through the ´pulse` or the pulses. Located at the radial artery, centered around the radial styloid process, one is gently ´palpating` or sensing the flow of ´Qi` , energetic function and vitality (rather than corporal blood).
There are 12 positions, related to their respective Organ Functions, each with 3 distinctive levels: Qi, Blood & Jing or  Function, Substance & Constitutional Form.
A total of 36 pulses, each with its distinctive characteristics of speed, form, beat & qualities – again differentiated according to gender & age, as well as expressing health or pathology.