Cover
Jul. 08, 2022
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 08, 2022
Entity File Number 001-37367
Entity Registrant Name OpGen, Inc.
Entity Central Index Key 0001293818
Entity Tax Identification Number 06-1614015
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 9717 Key West Ave
Entity Address, Address Line Two Suite 100
Entity Address, City or Town Rockville
Entity Address, State or Province MD
Entity Address, Postal Zip Code 20850
City Area Code 240
Local Phone Number 813-1260
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol OPGN
Security Exchange Name NASDAQ
Entity Emerging Growth Company false