Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 21, 2014	Jun. 28, 2013
Document Information [Line Items]
Entity Registrant Name	RESPONSE GENETICS INC
Entity Central Index Key	0001124608
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		38,728,196
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2013
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2013
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 15,041,861