Coc-Kroft began her television career appearing in Sale of the Century, and in 1991 on the New Zealand version of Wheel of Fortune as the co-host with Phillip Leishman, later Simon Barnett. She continued in this role until the show ended in 1996. In 1994 she fronted the extreme sports show On The Edge for five years, where she went diving with sharks, parachuting, caving and extreme rafting in New Zealand and around the world. During the late 1990s she hosted 91ZM breakfast radio with Marcus Lush, leaving in 2002. In 1999 she co-hosted the "The Lipstick Lunch" on ZM, which was networked nationwide in 2000. The show did not rate well despite winning Top Non Breakfast Award at the New Zealand Radio Awards in 2002 and as a result show was concluded.
Over the next few years Coc-Kroft hosted a series of shows and documentaries including Can You Hackett, Make or Break, DIY Dads, On the Road, and Test the Nation. While filming Celebrity Treasure Island during April 2004 in Fiji, Coc-Kroft became very ill due to a coral cut, and was flown by helicopter to Auckland City Hospital with potentially fatal Streptococcal toxic shock syndrome. She spent nine days in a coma and five weeks in critical care. After six-seven months of rehabilitation she had made an almost complete recovery.
Coc-Kroft has appeared in various New Zealand television advertisements, including one in 2003 advertising to switch off the microwave as the clock consumes a large amount of power. She has been national ambassador and spokesperson for several high-profile campaigns including World Vision, Persil Dirt is Good, Healtheries, and the National Water competency programme.
Regarding the 2005 celebrity drug case involving former rugby players Marc Ellis and Brent Todd (called Project Aqua by the police)., as part of the case, Coc-Kroft was granted name suppression, which she later let lapse, and she went to the police to explain her relationship with the men involved, but was not charged.
- Lang, Sarah (15 February 2009). "Lana's leap outside her comfort zone". The New Zealand Herald. Archived from the original on 23 February 2013. Retrieved 26 January 2010.
- Gamble, Warren (15 March 2003). "Lana Coc-Kroft, comfortable in her own skin". The New Zealand Herald. Retrieved 27 January 2010.
- Bennett, Cath (8 March 2009). "Lana makes daring return to TV". Sunday News. Retrieved 27 January 2010.
- Kiong, Errol (15 June 2005). "Coc-Kroft donates blood in support of drive". The New Zealand Herald. Retrieved 27 January 2010.
- "TV star Coc-Kroft's illness critical". The New Zealand Herald. 1 May 2004. Retrieved 27 January 2010.
- "Celeb drug ring supplier jailed for four years". The New Zealand Herald. 2 November 2006. Retrieved 27 January 2010.
- Middleton, Julie (7 April 2006). "My name dragged in by bugged chat, says Coc-Kroft". The New Zealand Herald. Retrieved 27 January 2010.
- Fisher, David (24 July 2005). "Drug police to speak to Kronfeld and Coc-Kroft, but neither face charges". The New Zealand Herald. Retrieved 27 January 2010.