Get a value from the last row for the student

[Anonymous]

I am new to Power BI and I am trying to get the last test value for a student where the test could have been taken multiple times.  I need to omit the student if they only took the test once.  There are row numbers per student in the table.  The student number field is UMPI_NBR.  the value I want is PHQ9_TOTAL and the row number field is TESTROW.  All I am pulling right now is the largest value of all of the tests beyond the 1st one instead of the value of PHQ9_TOTAL of the MAX TESTROW.

Last Visit = SUMX (

    VALUES( Table1[UMPI_NBR] ),

    CALCULATE (MAX(Table1[PHQ9_TOTAL] ), (Table1[TESTROW] > 1) )

)