Do not belong to the traditional Chinese medicine four major identification are

Biometric identification is not one of the four traditional identification methods in traditional Chinese medicine. Pharmacognostic identification is an important basic work to study the source, properties, microscopic characteristics and physical and chemical properties of drugs by applying modern science and technology on the basis of inheriting the theory and practice of traditional Chinese medicine. There are many identification methods of Chinese herbal medicines, including source identification, morphological experience or sensory identification, microscopic identification and physical and chemical identification, commonly known as the four identification methods. The adoption of each method varies according to the appraisal object and purpose, and each method has its own characteristics and applicable objects, which can be used alone or in combination with each other.