Use this guideline as a measure...
*It was founded by Jesus Christ Himself in Mt 16:18.
*It would be built on Simon Peter, Mt 16:18.
*It would be defended by GOD Himself, Mt 16:18-19.
*It would have authority given by Jesus Christ, Mt 16:19,18:17-18.
*It would be guided by the Holy Spirit who will dwell within it, Jn 14:15-17, Act 15:28,16:6.
*It would be one and undivided, Mk 3:24-25.
*It would have one fold and one shepherd, Jn 10:16.
*It would have Priests, Bishops, and Deacons, 1Tim 3:1-13.
*It must have the Holy Eucharist celebration, Jn 6:42-70, Act 2:42.
*It must be found in all nations, Mt 28:19.
*It must be found in all centuries, Mt 28:20.
*Jesus Christ said He would be with His Church every day, in every year, until the end of the world, Mt 28:20. This means no gaps in time.
Examine your Church to see if it meets ALL of these requirements.
It must NOT have a human person founder.
It must have a continuous history going back over 1950 years.