DNA was extracted from most of the crude drugs by adjustment of the QIAamp® DNA Mini Kit. 
QIAamp
DNA could not be extracted from sea-ear shell using the EDTA decalcification treatment, but was extracted successfully using a TBONE EX KIT. 
TBONE EX KIT
Polymerase chain reaction (PCR) products of approximately 600 bp in length were obtained from all samples except donkey glue, one of the two seahorses, and longgu. 
Polymerase chain reaction (PCR)
The mitochondrial 16S ribosomal RNA (rRNA) gene region was amplified, and Basic Local Alignment Search Tool (BLAST) analysis was performed after sequencing. 
Basic Local Alignment Search Tool (BLAST)