POWER OF ATTORNEY


      Know all by these presents, that the undersigned hereby
constitutes and appoints John Fry and Brian Keane, each of Quanterix
Corporation, and Megan Gates, John Condon, Keunjung Cho, Amanda Mei,
Anne Leland and Brenda Meyette, each of Mintz, Levin, Cohn, Ferris,
Glovsky and Popeo, P.C., signing singly, with full power of
substitution, the undersigned's true and lawful attorney-in-fact to:
(1)	execute for and on behalf of the undersigned, forms
and authentication documents for EDGAR Filing Access;
(2)	do and perform any and all acts for and on behalf of
the undersigned which may be necessary or desirable to
complete and execute any such forms and authentication
documents;
(3) 	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer, director and/or
10% shareholder of the Company, Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder;
(4)	do and perform any and all acts for and on behalf of
the undersigned which may be necessary or desirable to
complete and execute any such Form 3, 4 or 5 and
timely file such form with the United States
Securities and Exchange Commission and any stock
exchange or similar authority; and
(5)	take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of
such attorney-in-fact, may be of benefit to, in the
best interest of, or legally required by, the
undersigned, it being understood that the documents
executed by such attorney-in-fact, on behalf of the
undersigned pursuant to this Power of Attorney, shall
be in such form and shall contain such terms and
conditions as such attorney-in-fact may approve in
such attorney-in-fact's discretion.
      The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do if
personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or
such attorney-in-fact's substitute or substitutes, shall lawfully do
or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that
the foregoing attorneys-in-fact, in serving in such capacity at the
request of the undersigned, is not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.
      This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4 and 5
with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-
in-fact.
      IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed this 18th day of June 2021.
/s/ Michael Doyle
Michael Doyle