v2.4.0.6
Document And Entity Information (USD $)
 12 Months Ended
Dec. 31, 2011
Document and Entity Information [Abstract]  
Entity Registrant Name ALR Technologies Inc.
Document Type 10-K
Current Fiscal Year End Date --12-31
Entity Common Stock, Shares Outstanding 213,977,909
Entity Public Float $ 106,997,178
Amendment Flag false
Entity Central Index Key 0001087022
Entity Current Reporting Status Yes
Entity Voluntary Filers No
Entity Filer Category Smaller Reporting Company
Entity Well-known Seasoned Issuer No
Document Period End Date Dec. 31, 2011
Document Fiscal Year Focus 2011
Document Fiscal Period Focus FY