Hi edo288,
There are many sites about neutropenia. Here is one:
http://www.lrf.org.uk/media/images/W...iet07_5348.pdf
As you can see they think you ought to be careful if you have a neutrophil count of 0.5-2.0 x 109/litre (or 500-2000 as you call it) and very careful with a neutrophil count below 0.5 x 109/litre.
If you get an infection all counts will decrease.
Kind regards
Birgitta-A