Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Apr. 15, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	AMERICAN BIO MEDICA CORP
Entity Central Index Key	0000896747
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Incorporation State Country Code	NY
Entity File Number	0-28666
Entity Public Float			$ 30,235,000
Entity Common Stock, Shares Outstanding		40,003,476