Why would you want to ......... ?

Let me guess - you use coulter technology ?

Pardon, but the way you stat your question is strange.
I have routinely run infant blood with high H& Hs (e.g. 20 gram +) with no
reason to dilute.
Perhaps I am just behind the times...I don't get out of the local area much
and don't know what CAP check list # you are referring to.    Plasma
replacement (Gange ?, 1977 or something like that) is usually done on
elevated MCHC (e.g. > 37%), after it has been determined that the plasma is
lipemic (hemolysis, not much of a problem anymore) and not a cold agg.. If
the indices are a normal (MCHC 33.3 +/- 3) I am on to the next view.

For those of you who are interested, I have for that washing of the cells
(x2, combined with the usual vortexing) is helpful in marked plt clumping.
My theory is that it dilutes out the EDTA or anticoagulant of choice, thus
lessening the problem.

No need to saline replace with normal indicies.  Some people just have high
hemoglobins ...