Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v2.4.0.6
Document and Entity Information (USD $)
12 Months Ended
May 31, 2012
Aug. 24, 2012
Nov. 30, 2011
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date May 31, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY    
Trading Symbol PRTX    
Entity Registrant Name PROTALEX INC    
Entity Central Index Key 0001099215    
Current Fiscal Year End Date --05-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Smaller Reporting Company    
Entity Common Stock, Shares Outstanding   18,926,615  
Entity Public Float     $ 6,400,000