Tape Testing .

Tape testing presses a clear adhesive tape against a suspect surface to lift microbial structures — spores, hyphae, and fruiting bodies — onto the tape. The sealed sample is sent to an accredited lab where direct microscopy identifies genus, density, and whether growth is active.

Visible discoloration on drywall, baseboards, ceiling tiles or trim doesn't always mean mold — and even when it is mold, the species and concentration matter for scoping remediation correctly. Arnold Mold Inspections uses tape-lift sampling as the fastest, most cost-effective way to confirm exactly what is growing on a flat finished surface in Los Angeles, California.

Each tape-lift is collected with fresh, sterile materials, sealed in a labeled transport container and submitted to an AIHA-LAP accredited laboratory under chain-of-custody. Direct microscopy returns identification within 1–3 business days — typically faster than culture-based methods — and clearly distinguishes active growth from settled spores.

Tape-lift results are most powerful when interpreted alongside visual inspection, moisture mapping, and air sampling. Our reports combine all relevant data into a single document that scopes the problem, identifies the moisture source, and gives any remediation contractor a clear, defensible starting point.