A ruling on a motion to suppress pursuant to Section 700.1 shall be reviewed on appeal even if the judgment is predicated upon an admission of the allegations of the petition.
A judgment or subsequent order entered by a referee shall become appealable whenever proceedings pursuant to Section 252, 253, or 254 have become completed or, if proceedings pursuant to Section 252, 253, or 254 are not initiated, when the time for initiating the proceedings has expired.
Ca. Welf. and Inst. Code § 800