Getting blood and swab for life insurance but…?

My husband and I are both insured as “smokers”. We quit smoking cigarettes more than a year ago and the other day I got the brilliant idea to have our policy amended to rate us as “non-smokers”. I just came to realize that I smoked a joint over 3 weeks ago. It was the first time since high school (I'm 28) and I don't plan on doing it ever again. It was totally out of character of me!
But are they going to see this in my blood test and classify me as a smoker?? If so, how long should I wait before having the test done?

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Answer:
When testing the swabs and blood profiles they test for cotinine, which is a byproduct of anything that is smoked or tobacco products. Cotinine will typically stay in the blood stream for roughly 10 days. If you've only had one joint 3 weeks ago and no other tobacco products in the last year, it's highly unlikely that it will even show up on the tests.

Technically becuase you smoked within the last year you are classed as a smoker and I'm not telling you to lie, but chances of them finding out are very slim if this was just a one off.

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Answer:
They’ll probably see it in the test results, which will mean you won't get that nonsmoker rate. You should probalby wait another year.

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Answer:
You might want to wait a while, how long? no one knows. It's absolutely up to you.