Quanterix Investor Presentation — March 2020

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Q4 & FY 2019 Earnings Call

March 9, 2020Q4 & FY 2019 Earnings Call | March 9, 2020 | 2

Forward -Looking Statements & Non- GAAP 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 words or expressio ns referencing future

events, conditions or circumstances) are intended to identify forward -looking statements. Forward -looking statements are based o n Quanterix’

expectations and assumptions as of the date hereof. Each of these forward -looking statements involves risks and uncertainties. F actors that may

cause Quanterix’ actual results to differ from those expressed or implied in the forward -looking statements in this press release 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, Quanterix assumes no obligation to update any forward -looking statements contained herein to reflect any change in expectat ions, even as new

information becomes available.

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

Management uses these non -GAAP measures to evaluate the Company’s operating performance in a manner that allows for meaningful p eriod- to-

period comparison and analysis of trends in its business. Management believes that such measures are important in comparing current results with

prior period results, and are useful to investors and financial analysts in assessing the Company’s operating performance. The non- GAAP financial

information presented here should be considered in conjunction with, and not as a substitute for the financial information presented in accordance with GAAP. Investors are encouraged to review the reconciliation of these non- GAAP measures to their most directly comparable GA AP financial