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100% Recommended

18 Years In Business

Company Details


295 South Chestnut, PO Box 248
Monrovia, IN 46157


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Service Details

    Areas of Expertise

    • Ph.D. Microbiologist specializing in Mold Identification
    • Indoor air quality analysis for level of mold spores (I inspect for mold but I'm not a home inspector!)
    • Spore - trap analysis, visual counting and identification (1-2 day turn-around)
    • Spore-trap viable analysis (7-10 day turn-around)
    • Other lab services: Well water microbiology
    View All Offerings and Cities Served

    Cost Information

    • Free Estimates
    • Trip Charge May Apply


    68 Verified Reviews
    • 5
    • 4
    • 3
    • 2
    • 1

    Highly rated for

    • Quality
    • Value
    • Customer Service
    Showing 1-10 of 68 reviews Showing 0 reviews
    5.0 Amanda R. Noblesville, IN

    She showed up right on time, explained the process, and was done within 20 minutes. Super nice to talk to and would recommend.

    4.0 Robert G. Indianapolis, IN

    Diana was prompt for our appointment. She conducted her testing efficiently and was friendly. She verbally shared her findings immediately after along with some mitigation strategies. She later sent a detailed written report with specific measurements. I gave slightly less than a perfect score because 1. She did not take credit card payment (which I had intended to use); 2. She does not provide removal service - only testing, of which I wasn’t aware... maybe I missed that somewhere??

    5.0 Lynne W. Charlestown, IN

    We have had testing in three different locations by Dr. Catt. She is extremely thorough and incredibly knowledgeable. She provides not only written but verbal communication regarding her findings. She only tests, so she isn't someone whose goal is to sell you remediation. She is very knowledgeable about it and can inform you of how it is best done, however. We follow (and have followed) her advice to the letter and when we found a safe dwelling have continued to follow her advice. Having had previous mold toxicity that ended up with me having to go to Germany for treatment, it was imperative that we found someone with her expertise. We will not use anyone else to test because our experiences with her have been so stellar.

    4.0 Rick Y. Clayton, IN

    This service does testing only and is not a remediation company therefore is not more likely to over state your problem to increase the amount of remediation cost.

    5.0 Larry C. Indianapolis, IN

    Knowledgeable, timely, friendly


    Very responsive and provided thorough report.

    5.0 Kathryn B. Fishers, IN

    Excellent and very knowledgable.

    Showing 1-10 of 68 results Showing 0 of 0 results


    Mold Diagnostics, LLC

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    Seal of Approval

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    1. Verify Trade License
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      We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
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