Jan 19 (Reuters) - CSL Ltd CSL.AX :
* Upgraded its net profit after tax (NPAT) expectation for FY2017
* Now expects to deliver NPAT growth for FY17 in range of approximately 18% to 20% at constant currency on FY16 result
* Expects to report NPAT of approximately US$800 million for six months ended 31 December 2016
* Expected result includes a currency exchange headwind of approximately US$20 million Source text for Eikon: Further company coverage: CSL.AX