Document and Entity Information	3 Months Ended
	Mar. 31, 2013	May 08, 2013
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Trading Symbol	BPTH
Entity Registrant Name	BIO-PATH HOLDINGS INC
Entity Central Index Key	0001133818
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock Shares Outstanding		63,729,050