Quanterix (QTRX) 10-Q/A 2024 Q1 Quarterly report (amended)

Exhibit 32.1

CERTIFICATIONS UNDER SECTION 906

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of Quanterix Corporation, a Delaware corporation (the “Company”), does hereby certify, to such officer’s knowledge, that:

The Amendment No.1 to the Company's Quarterly Report for the period ended March 31, 2024 (the “Form 10-Q/A”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Form 10-Q/A fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: December 23, 2024	/s/ Masoud Toloue
	Masoud Toloue
	President and Chief Executive Officer
Dated: December 23, 2024	/s/ Vandana Sriram
	Vandana Sriram
	Chief Financial Officer