Jan 9 (Reuters) - Tandem Diabetes Care Inc:
* TANDEM DIABETES CARE ANNOUNCES PRELIMINARY 2017 RESULTS AND PROVIDES 2018 GUIDANCE
* - PRELIMINARY Q4 GAAP SALES INCREASED TO APPROXIMATELY $39 MILLION TO $40 MILLION FROM $28.9 MILLION IN 2016
* TANDEM DIABETES CARE - EXPECT Q4 PUMP SHIPMENTS INCREASED TO ABOUT 7,000 PUMPS
* - 2018 GAAP SALES ARE ESTIMATED TO BE IN RANGE OF $132 MILLION TO $140 MILLION
* FY2018 REVENUE VIEW $133.6 MILLION -- THOMSON REUTERS I/B/E/S Source text for Eikon: Further company coverage: