If mold is visible, a lab test usually does not change anything. You can see it, and it has to be removed either way, so paying for a spore count before we start rarely earns its cost back. We will say so plainly rather than adding a test to the invoice because it sounds thorough.
Air sampling earns its keep in two situations: confirming a suspected source that is not visible, such as growth inside a wall cavity behind a stain, or as post-remediation verification once the work is finished. An independent lab compares air inside the work area to air outside it, and that comparison is what tells you the job actually worked.
No spore count tells you whether a particular person will feel unwell, and "black mold" is a media term, not a lab finding - it describes color, not species or risk. We take the concern seriously without translating it into a diagnosis we are not qualified to make.
