Quanterix Investor Presentation — November 2022

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November 8, 2022Q3 2022 Earnings Call 2Forward- Looking Statements & Pro- Forma Financial Measures

This presentation contains forward -looking statements within the meaning of the Private Securities Litigation Reform Act of 1995.

Words such as "may," "will," "expect," "plan," "anticipate," "estimate," "intend" and similar expressions (as well as other w ords or

expressions referencing future events, conditions or circumstances) are intended to identify forward -looking statements. Forward -

looking statements in this presentation are based on Quanterix’ expectations and assumptions as of the date of this presentat ion.

Each of these forward- looking statements involves risks and uncertainties. Factors that may cause Quanterix’ actual results to differ

from those expressed or implied in the forward -looking statements in this presentation are discussed in Quanterix’ filings with the U.S.

Securities and Exchange Commission, including the "Risk Factors" sections contained therein. Except as required by law, Quant erix

assumes no obligation to update any forward -looking statements contained herein to reflect any change in expectations, even as new

information becomes available.

To supplement the Company’s financial statements presented on a GAAP basis, the Company has provided certain pro-

forma financial measures. Management uses these pro- forma measures to evaluate the Company’s operating performance in a

manner that allows for meaningful period -to-period comparison and analysis of trends in its business. Management believes that such

measures are important in comparing current results with other period results and are useful to investors and financial analysts in

assessing the Company’s operating performance. The pro- forma financial information presented here should be considered in