Kildare's Coroner is Head of the Medical Bureau of Road Safety.
Kildare's Coroner says there has been a "huge" increase in instances of drug-driving.
Prof. Denis Cusack is also head of the Medical Bureau of Road Safety.
The organisation says incidents of drug driving jumped by 11% in the first quarter of the year.
And there was a 37% rise in the number of blood and urine specimens submitted for drugs testing in 2020 compared with 2019.
Prof. Cusack, speaking to Kildare Today, says it can be a challenge keeping up with new kinds of drugs.
Prof. Cusack joined Clem Ryan on Wednesday's edition of the programme.

Kfm Obituary Notices
Three Sisters Seriously Injured In M9 Crash Say They're Getting Stronger Each Day
KCC Asked To Purchase Historic Derelict Building In Naas Harbour
Leixlip Residents "Of All Ages" Asked To Fill Out Community Surveys Aimed At Future Development
Calls For Additional Sporting Facilities In Naas
Over €15M Funding Announced For Kildare Regeneration Projects
Newbridge Motorist Caught Driving 40KM/H Above Speeding Limit