Cover - shares	9 Months Ended
	Sep. 30, 2023	Nov. 06, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2023
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Entity File Number	001-35853
Entity Registrant Name	Harvard Apparatus Regenerative Technology, Inc.
Entity Central Index Key	0001563665
Entity Tax Identification Number	45-5210462
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	84 October Hill Road
Entity Address, Address Line Two	Suite 11
Entity Address, City or Town	Holliston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01746
City Area Code	(774)
Local Phone Number	233-7300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		13,947,324