Check an internal table is initial or not..

Hello experts,

I need to check whether an internal table is initial or not in AMDP.....

Lets say i have an internal table IT_TAB[].

I need a statement similar to IT_TAB[] IS NOT INITIAL (in ABAP)

I already tried with COUNT(*), but it returns me an internal table with a column name COUNT with the total number of entries and found it not useful.

Thanks in Advance,

Ramesh