Check the positions of Mars in the birth chart
If Mars is in the 1st house, Manglik is present
If Mars is in the 2nd house, Manglik is present
If Mars is in the 4th house, Manglik is present
If Mars is in the 7th house, Manglik is present
If Mars is in the 8th house, Manglik is present
If Mars is in the 12th house, Manglik is present
Check the Lagna chart, Moon chart, and Venus chart
If Mars is placed in any Manglik house from these charts, Manglik is considered present
Check whether Mars is conjunct with Lagna lord, Moon, or Venus
Check the strength and aspects of Mars
Check for cancellation conditions in the chart
Consult a qualified astrologer for final confirmation