Greetings!

Am reading data from Excel into Access to do some manipulations, then
bringing it back to Excel. A new field in the Access return data sometimes
has a null value. I see I can use the Access NZ function in the query to
force it to a "" value rather than null.

However, as is, I have a cell value in the return data that shows up in an
Excel pivot table (snapped on the data table) field value selection list as
a colored box, different than a text value or a blank (i.e. "").

The cell has no value that I can detect, but trying to use it in any
operation (calculation or feed to function) results in an error.

Question, then: is there a function or other method, preferably available
on the worksheet but as a fallback as an attribute accessible via VBA, that
I can use to detect a null cell in Excel originating from an imported Access
table?

Thanks,
George