I read the web site you posted and it clearly states that there can be contamination if you share the same lancet. However you used a new uncontaminated lancet so there is no chance of transmission. Breath easy - You are OK. - Fred
http://www.cdc.gov/injectionsafety/blood-glucose-monitoring.html
If you used a new lancelet I'm not sure how there would be any risk? Please point out where they say that on the CDC website.