Haw. Rev. Stat. § 291E-13: Additional tests.

The person tested may choose any physician, physician assistant, registered nurse, or person licensed in a clinical laboratory occupation under section 321-13 to withdraw blood and also may choose any qualified person to administer a test or tests in addition to any administered at the direction of a law enforcement officer. The result of the test or tests may be used as provided in section 291E-3. The failure or inability to obtain an additional test by a person shall not preclude the admission of the test or tests administered at the direction of a law enforcement officer. Upon the request of the person who is tested, full information concerning the test or tests administered shall be made available to that person.