[Histonet] Re: Histonet Digest, Vol 41, Issue 47 AFB Contamination

From:Mark Frei

Carbol-Fuchsin has been known to precipitate out of solution, usually due 
to exposure to extreme temperatures during shipping.  The small red 
granules can be confused with AFB.  A clue would be seeing dye particles 
deposited on parts of the slide where there should be no specimen.   Pitch 
the bottle and ask for a replacement.  Do not try to filter!

Mark Frei   MT(ASCP)
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