UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

QUANTERIX CORP
(Name of Issuer)

Common Stock, $0.001 par value per share
(Title of Class of Securities)

74766Q101
(CUSIP Number)

December 29, 2022
(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this
 Schedule is filed:

       [     ] Rule 13d-1(b)
       [ X ] Rule 13d-1(c)
       [     ] Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's
 initial filing on this form with respect to the subject class of securities,
 and for any subsequent amendment containing information which would alter
 disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
 deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
 Act of 1934 ("Act") or otherwise subject to the liabilities of that section
 of the Act but shall be subject to all other provisions of the Act (however,
 see the Notes).


CUSIP No.
74766Q101

13G

Page 2 of 7 Pages

1.
NAMES OF REPORTING PERSONS OR
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Pura Vida Investments, LLC

2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)

(a) [    ]
(b) [ x ]
3.
SEC USE ONLY


4.
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware


NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5.
SOLE VOTING POWER

0

6.
SHARED VOTING POWER

2,080,641*

7.
SOLE DISPOSITIVE POWER

 0

8.
SHARED DISPOSITIVE POWER

2,080,641*

9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

2,080,641*

10.
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(see instructions) [  ]


11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 5.62%**

12.
TYPE OF REPORTING PERSON (see instructions)

 IA







CUSIP No.
74766Q101

13G

Page 3 of 7 Pages

1.
NAMES OF REPORTING PERSONS OR
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Efrem Kamen

2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)

(a) [    ]
(b) [ x ]
3.
SEC USE ONLY


4.
CITIZENSHIP OR PLACE OF ORGANIZATION
 USA


NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5.
SOLE VOTING POWER

 0

6.
SHARED VOTING POWER

2,080,641*

7.
SOLE DISPOSITIVE POWER

 0

8.
SHARED DISPOSITIVE POWER

2,080,641*

9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

2,080,641*

10.
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(see instructions) [  ]


11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

5.62%**

12.
TYPE OF REPORTING PERSON (see instructions)

 IN, HC










CUSIP No.
74766Q101

13G

Page 4 of 7 Pages


Item 1.

(a)
Name of Issuer

QUANTERIX CORP




(b)
Address of Issuers Principal Executive Offices

900 Middlesex Turnpike Billerica, MA 01821

Item 2.

(a)
Name of Person Filing

Pura Vida Investments, LLC
Efrem Kamen
(collectively, the "Filers").




(b)
The address of the principal place of the Filers is located at:

Pura Vida Investments, LLC
512 West 22nd Street, 7th Floor
New York, NY 10011




(c)
 For citizenship of Filers, see Item 4 of the cover sheet for each Filer.





(d)
Title of Class of Securities

Common Stock, $0.001 par value per share




(e)
CUSIP Number

74766Q101

Item 3. If this statement is filed pursuant to 240.13d-1(b) or 240.13d-2(b)
 or (c), check whether the person filing is a:


(a)
[  ]
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).





(b)
[  ]
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).





(c)
[  ]
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).





(d)
[  ]
Investment company registered under section 8 of the Investment Company Act of
 1940 (15 U.S.C. 80a-8).



(e)
[x]
An investment adviser in accordance with 240.13d-1(b)(1)(ii)(E);









(f)
[  ]
An employee benefit plan or endowment fund in accordance with 240.13d-1(b)(1)
(ii)(F);





(g)
[  ]
A parent holding company or control person in accordance with 240.13d-1(b)(1)
(ii)(G);











(h)
[  ]
A savings associations as defined in Section 3(b) of the Federal Deposit
 Insurance Act (12 U.S.C. 1813);






(i)
[  ]
A church plan that is excluded from the definition of an investment company
 under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C.
 80a-3);





(j)
[  ]
Group, in accordance with 240.13d-1(b)(1)(ii)(J).
CUSIP No. 74766Q101

13G

Page 5 of 7 Pages

Item 4. Ownership.

(a) Amount beneficially owned: Pura Vida Investments LLC 2,080,641* shares
 Efrem Kamen 2,080,641* shares
(b) Percent of class: Pura Vida Investments LLC 5.62%** Efrem Kamen 5.62%**
(c) Number of shares as to which the person has:
       (i) Sole power to vote or to direct the vote 0
(ii) Shared power to vote or to direct the vote Pura Vida Investments LLC
 2,080,641* shares Efrem Kamen 2,080,641* shares
(iii) Sole power to dispose or to direct the disposition of 0
(iv) Shared power to dispose or to direct the disposition of Pura Vida
 Investments, LLC 2,080,641* shares Efrem Kamen 2,080,641* shares

* Shares reported herein are owned by Pura Vida Master Fund, Ltd. (the
 "Pura Vida Master Fund") and certain separately managed accounts (the
 "Managed Accounts," collectively the "Client Accounts"). Pura Vida
 Investments, LLC ("PVI") serves as the investment manager or sub-adviser
 to the Client Accounts. Efrem Kamen serves as the Managing Member of PVI.
 Efrem Kamen serves as the managing member of PVI. By virtue of these
 relationships, the Reporting Persons may be deemed to have shared voting
 and dispositive power with respect to the Shares owned directly by the Pura
 Vida Master Fund and the Managed Accounts. This report shall not be deemed
 an admission that the Reporting Persons are beneficial owners of the Shares
 for purposes of Section 13 of the Securities Exchange Act of 1934, as amended,
 or for any other purpose. Each of the Reporting Persons disclaims beneficial
 ownership of the Shares reported herein except to the extent of the Reporting
 Persons pecuniary interest therein.

**The percentages herein are calculated based upon 37,054,705 shares of Common
 Stock of the Issuer outstanding per the Issuers Form 10-Q filed with the
 Securities and Exchange Commission on November 9, 2022.


Item 5. Ownership of Five Percent or Less of a Class.

N/A

Item 6. Ownership of More than Five Percent on Behalf of Another Person.

N/A

Item 7. Identification and Classification of the Subsidiary Which Acquired the
 Security Being Reported on By the Parent Holding Company.

N/A


CUSIP No. 74766Q101

13G

Page 6 of 7 Pages

Item 8. Identification and Classification of Members of the Group.

N/A

Item 9. Notice of Dissolution of Group.

N/A

Item 10. Certification.

By signing below I certify that, to the best of my knowledge and belief, the
 securities referred to above were not acquired and are not held for the
 purpose of or with the effect of changing or influencing the control of the
 issuer of the securities and were not acquired and are not held in connection
 with or as a participant in any transaction having that purpose or effect.

Exhibits.

Exhibit A Joint Filing Agreement.


SIGNATURE


After reasonable inquiry and to the best of my knowledge and belief, I certify
 that the information set forth in this statement is true, complete and
 correct.

Dated: January6, 2023


Pura Vida Investments, LLC

By: /s/ Efrem Kamen, Managing Member


CUSIP No. 74766Q101

13G

Page 7 of 7 Pages

EXHIBIT A
AGREEMENT REGARDING JOINT FILING
OF STATEMENT ON SCHEDULE 13D OR 13G

The undersigned agree to file jointly with the Securities and Exchange
 Commission (the "SEC") any and all statements on Schedule 13D or Schedule
 13G (and any amendments or supplements thereto) required under section 13(d)
 of the Securities Exchange Act of 1934, as amended, in connection with
 purchases and sales by the undersigned of the securities of any issuer until
 such time as the undersigned file with the SEC a statement terminating this
 Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G. For that
 purpose, the undersigned hereby constitute and appoint Pura Vida Investments,
 LLC, a limited liability company, as their true and lawful agent and
 attorney-in-fact, with full power and authority for and on behalf of the
 undersigned to prepare or cause to be prepared, sign, file with the SEC and
 furnish to any other person all certificates, instruments, agreements and
 documents necessary to comply with section 13(d) and section 16(a) of the
 Securities Exchange Act of 1934, as amended, in connection with said purchases
 and sales, and to do and perform every act necessary and proper to be done
 incident to the exercise of the foregoing power, as fully as the undersigned
 might or could do if personally present, until such time as the undersigned
 file with the SEC a statement terminating this Agreement Regarding Joint
 Filing of Statement on Schedule 13D or 13G.

Dated: January 6, 2023


Pura Vida Investments, LLC

By: /s/ Efrem Kamen, Managing Member