19456
Her PHB levels were very high , as expected , but primidone levels were also detected although she and her parents denied history of primidone administration .
 Chemical: PHB; Chemical: primidone; Chemical: primidone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: PHB; Chemical: primidone; Chemical: primidone