Do moisture meters work on concrete?

I will make this short and sweet: nobody has any business using a moisture meter on concrete unless it's a concrete moisture meter. A concrete moisture meter is an expensive one-trick pony I've never owned. They're useful if you're going to install a floor covering over concrete, and that's about all. For this reason, I've never owned a concrete moisture meter, and I surely never will. As a home inspector, I have no use for this tool.
If I try using my wood moisture meter on concrete, it'll peg my meter. This doesn't mean the concrete is wet; it just means I'm using the wrong tool for the job.

[@zelozejn]

I have an Extech MO55, which has an option for wood and building materials, and the manual also specifically mentions concrete under building materials. Of course you then have to select correct material. ;)

[@Direct_Home_Inspections]

I don't get these inspectors spreading misinformation. Mine don't peg out at 50%, and read 8-12% on most concrete unless it's wet. I typically have staining or other data to back it up.

[@Direct_Home_Inspections]

I disagree. I use them on foundation walls and will read 8-12% on dry areas, and over 14% on damp areas. There is typically other supporting information to back up the numbers. Such as staining or efflorescence. I use them every day and to claim they peg out is simply false information

[@sumeriansumer1622]

Which moisture meter model number do you use?

[@bethanyanderson1745]

I just now read arguments between *commentors about moisture being trapped between spray foam and roof decking. Of course, as is common on the Internet, everyone was an expert.
Basically, the issue revolved around spray foam hiding leaky decking, obsorbing water and expanding the wet areas, then holding the water in place thus causing wood rot of trusses/decking, and finally shorting the life of asphalt shingles due to no ventilation or baffling directly under decking. Oh, and spray foam's toxic off-gassing lasting for years causing AC coils to "turn into powder." Along with speculation abt what these gasses are doing to our health.
Lastly, apparently, spray foam does a Vulcan mind meld and becomes one with wood. So the cost to remove the rotted decking with the attached wet and now heavy spray foam is a horror similar to 1950s The Blob horror movies.
Will your moisture meter detect all the above?
* on another website