POWER OF ATTORNEY

        Know all by these present that the undersigned hereby constitutes and
appoints each of Douglas C. Bryant, Robert J. Bujarski, Joseph M. Busky,
Michelle Hodges and Phillip Askim, signing singly and not jointly, the
undersigned's true and lawful attorneys-in-fact and agents to:

        (1) execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer, director or beneficial owner of more than 10% of a
registered class of securities of QuidelOrtho Corporation (the "Company"), (a)
any and all Forms 3, 4, and 5 (including any amendments thereto) required to be
filed under Section 16(a) of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), and the rules thereunder and (b) a Form ID, Uniform
Application for Access Codes to File on EDGAR, including Update Passphrase
Confirmation;

        (2) do and perform any and all acts for and on behalf of the
undersigned that may be necessary or desirable to complete and execute any and
all such Forms 3, 4, and/or 5 and timely file such forms with the United States
Securities and Exchange Commission and any stock exchange or similar authority,
including without limitation, obtaining and updating EDGAR Access Codes and
preparing Form ID forms; and

        (3) 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, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Exchange Act.

        This Power of Attorney shall remain in full force and effect until the
earliest to occur of (a) 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, or (b) revocation by the undersigned in a
signed writing delivered to the foregoing attorneys-in-fact. For the avoidance
of doubt, this Power of Attorney shall replace any prior powers of attorney for
filings under Section 16 of the Exchange Act for each of Quidel Corporation and
Ortho Clinical Diagnostics Holdings plc and such prior agreements are hereby
revoked.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 25th day of May, 2022.

                                        /s/ Michael S. Iskra
                                        ---------------------
                                        Name: Michael S. Iskra