How to Do Low-Cost Mold Sample Collection and Mold Laboratory Identification of Mold Species

Although any mold in elevated levels indoors can cause severe health problems for mold-sensitive occupants, several toxic molds such as Stachybotrys, Aspergillus, and Penicillium pose far greater health risks than others, according to Phillip Fry, Certified Mold Inspector and author of the book Mold Health Guide.

Thus, many homeowners, rental property owners, tenants, employers, and employees in Canada, the USA, and worldwide want to know, and need to know, the precise identities of the various mold species infesting their moldy home, apartment, or workplace.

The accurate identification of mold species requires two steps: (1) physical collection of mold samples from the moldy building; and (2) mold laboratory analysis and mold species identification of the collected mold samples.

Lift tape sampling is an easy, practically-free (except for the cost of the tape), and an effective way to collect mold test samples when you---

        (1) Can see mold growing on a wall, ceiling, floor, carpeting, furniture,
              heating/cooling duct register, or other surface;

        (2) Want to test any surface for the possibility of mold growth---such as
              inside a heating/air conditioning duct register.

        (3) Want to know whether a particular stain, discoloration, or mystery
              substance on the wall or another surface is actually mold growth; and/or

        (4) Smell mold (the digestive gas emitted by mold eating the home or building)
              and want to test a number of surfaces upon which elevated levels of   
              airborne mold spores may have landed or been deposited, such as on walls,
              window sills, window and door trim, refrigerator top, kitchen cabinet tops,
              undusted furniture, heating/cooling duct registers,  and the return air filter in
              the heating/cooling system.

The easy steps involved in tape lift sampling are---

1. Cut a three-inch (3”) long strip of one-inch (1”) wide, transparent sticky tape such as Scotch®Brand Tape..

2. While wearing rubber gloves and a breathing respirator mask (with organic vapor filters) from the local hardware or home improvement store, press the tape strip firmly (sticky side down) onto the visible mold growth or onto the surface being tested.

3. Remove (peel back) the tape from the surface.

4. Open up a small ziplock bag (a transparent, easily sealable plastic storage bag), and press lightly the lift tape sample sticky side onto the inside sidewall of the ziplock bag.

5. Close [zip shut] the ziplock bag completely. Tape it shut if necessary to make sure no airborne mold spores can escape.

6. Attach to the outside of the ziplock bag a large adhesive label with the tester’s name, date of sampling, property address, the precise testing location at that address (e.g., “air conditioning duct register in living room”), testing method (“lift tape sampling”), and the name, postal address, email address, phone number, and fax number (if any) of the person submitting the sample to the mold laboratory of your choice.

7. Mail or express the collected lift tape samples (including payment of the lab’s analysis fee} to the mold analysis laboratory for mold species identification and quantification.