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Mold testing – How is mold measured?

What is mold?

Mold is a widespread problem in homes and commercial properties. When suspicion arises, a professional mold test is the only reliable way to determine the extent of the issue. Here is an overview of how the Mycometer rapid test works and why it is superior to traditional laboratory analyses.

Why is professional mold testing crucial?

Mold can grow hidden behind walls, under floors, and in ventilation systems. Visual inspection alone is insufficient, and many spores are invisible to the naked eye. A professional test provides you with:

  • Objective quantification of the mold presence

  • Documentation that can be used for insurance, authorities, and tenants

  • A basis for assessing whether remediation is necessary

  • Verification after remediation work is completed

How the Mycometer test works

The Mycometer method is an enzyme-based rapid test that measures the biological activity of fungi on surfaces or in the air. Unlike traditional contact plates and laboratory culturing, Mycometer provides results in less than 1 hour – right on-site.

Mycometer Surface Fungi

For surface testing, a sample is taken from the suspected surface using standardized sampling materials. The sample is treated with a fluorescent enzyme substrate, and the result is read on a Mycometer analysis unit. The value is expressed in Mycometer units and classified into three categories:

  • Category A – acceptable level (below the threshold)

  • Category B – elevated level (further investigation recommended)

  • Category C – high level (remediation recommended)

Advantages of Mycometer over traditional methods

  • Speed: Results in less than 60 minutes compared to 5–14 days for laboratory culturing

  • Precision: ISO 16000-22 certified and validated according to ASTM D8527-25

  • Quantification: Provides a numerical value, not just “detected/not detected”

  • On-site: No shipping to a laboratory – the test is performed on-site

  • Reproducibility: Standardized method with low operator variability

When should you order a mold test?

  • For visible mold growth or discoloration on walls, ceilings, or floors

  • For a persistent musty odor with no visible source

  • After water damage or moisture intrusion

  • For health issues that may be related to the indoor climate

  • As quality control after completed mold remediation

  • When buying or selling a property

Get started with professional mold testing

Mycometer offers the most effective equipment for professional mold measurement. Whether you are a restoration company, an indoor air quality consultant, or a building inspector, Mycometer provides you with reliable results – fast and verifiable.

Contact Mycometer today to learn more about our Surface Fungi and Air Fungi testing solutions, or visit our product pages for technical specifications.

Frequently asked questions

How long does a Mycometer test take?

The analysis itself takes less than 30 minutes after sampling. The entire visit – including inspection, sampling, and reporting the results – typically takes 1–2 hours.

Is the Mycometer test approved for insurance claims?

Yes. The Mycometer method is ISO 16000-22 certified and recognized by insurance companies as documentation for both the extent of damage and successful remediation.

Can I perform the test myself?

The Mycometer equipment is designed for professional users – restoration companies, indoor air quality consultants, and building inspectors. Contact Mycometer for information about training and equipment.

How much does a professional mold test cost?

The cost depends on the scope of the investigation (number of sampling points, surface vs. air). Contact Mycometer for a quote tailored to your project.