Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Jul. 30, 2020
Cover [Abstract]
Document Type	10-Q
Document Period End Date	Jun. 30, 2020
Entity Registrant Name	Quanterix Corp
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-38319
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-8957988
Entity Address, Address Line One	900 Middlesex Turnpike
Entity Address, City or Town	Billerica
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01821
City Area Code	617
Local Phone Number	301-9400
Title of 12(g) Security	Common Stock, $0.001 par value per share
Trading Symbol	QTRX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		28,440,339
Entity Central Index Key	0001503274
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false