Oct 14 (Reuters) - Sonic Healthcare Ltd SHL.AX :
* Q1 REVENUE A$2,144 MILLION VERSUS A$1,661 MILLION
* Q1 EBITDA A$580 MILLION VERSUS A$340 MILLION
* SONIC HEALTHCARE REMAINS UNCERTAIN HOW LONG CURRENT REVENUE GROWTH RATES WILL CONTINUE
* CAUTION THAT GROWTH LEVELS IN Q1 MAY NOT CONTINUE THROUGHOUT FY 2021