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INVENTORIES
3 Months Ended
Mar. 31, 2015
INVENTORIES [Abstract]  
INVENTORIES
3.  INVENTORIES

Inventories consist of raw materials, work-in-process and finished goods related to the manufacture of PROCYSBI. Raw materials include the active pharmaceutical ingredient ("API"), cysteamine bitartrate. Work-in-process includes third party manufacturing and associated labor costs relating to the Company's personnel directly involved in the production process. Also included in inventories are raw materials that may be used for clinical trials, which are charged to research and development (“R&D”) expense when consumed.

The following table summarizes the components of inventories.
 
  
March 31,
  
December 31,
 
(In thousands)
 
2015
  
2014
 
Raw materials
 
$
588
  
$
6,290
 
Work-in-process
  
2,892
   
721
 
Finished goods
  
837
   
2,123
 
Total Inventories
 
$
4,317
  
$
9,134