3408
If the platelet count falls to less than 100 , 000 / mm3 , while the patient is receiving heparin , platelet aggregation testing , using the patient ' s plasma , is indicated .
 Chemical: heparin; Disease: platelet aggregation
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: heparin; Disease: platelet aggregation