2464
Serum sodium ( Na ) , potassium ( K ) , and creatinine ( Cr ) were measured 24 h before angiography as baseline values , then measured again at 12 - , 24 - , and 48 - h intervals after CM use .
 Chemical: sodium; Chemical: Na; Chemical: potassium; Chemical: K; Chemical: creatinine; Chemical: Cr; Chemical: CM
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: sodium; Chemical: Na; Chemical: potassium; Chemical: K; Chemical: creatinine; Chemical: Cr; Chemical: CM