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How long after mold remediation to perform a Hertsmi test?

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Posted 9/27/2021 8:21 AM (GMT -5)
How long after a remediation should a new Hertsmi test be run?

I think Mycometrics recommends 4-6 weeks but other mold "experts" say 3 months is better as too soon will give a falsely high results as general cleaning, dusting, vacuuming, etc.. continues to pick up any spores that were undoubtedly spread around even under the most thorough remediation with air scrubbers, containment etc...

We recently remediated and I feel like its more stressful now not knowing if it was successful. Ugh...
Posted 9/27/2021 8:33 AM (GMT -5)
What was stated in your contract agreement with the remediation company?

Can you get a qualified 3rd party to do an air test and inspection in the meantime?

Can you describe how and where the remediation was done?
Posted 9/27/2021 9:45 AM (GMT -5)
Air testing doesn't seem all that reliable. Air testing of my basement showed close to nothing but Hertsmi indicated problems.

Wondering how long after a remediation to re-test, again I have heard 4 weeks and I have heard 3-4 months so figured I'd ask the experts here.

Thanks WalkingByFaith!
Posted 9/27/2021 10:37 AM (GMT -5)
I can see an argument for both testing right away (since some remediation teams mess up and contaminate things even worse than when they got there, and they really should be leaving it pretty darn close to mold-free) and for testing a few months later (to see if the precautionary changes you made alongside remediation - such as dehumidifiers, fixing leaks, attic ventilation, etc. - are having their intended effects and preventing regrowth). I tested basically right away, and things were pristine. Not sure how things would test now, two years later, but would be curious to know!
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