Choo has represented Australia multiple times including at the 2006, 2007 and 2009 BWF World Junior Championships. She continued representing Australia at a junior level at the 2007 Australian Youth Olympic Festival in Sydney and the 2008 Commonwealth Youth Games in Pune, India. Her senior debut was at the 2010 Uber Cup in Kuala Lumpur, Malaysia. She also competed at the 2012 edition in Wuhan, China. Choo has also represented Australia at the World Mixed Team Championships, the Sudirman Cup in 2011 and 2015.