What does 'retic' of 0.3% mean?

[Margaret Diann]

Just as an example ....

One of the workers exposed to 2-butoxyethanol 15 years ago has a retic ratio of 0.3% & the normal range is 0.5-2.0%

What does this mean?

Other counts looking mostly good:

WBC 6.3 (normal range for a male is 4.5-10.8)
RBC 4.45 (normal range for a male is 4.5-6.0)
HGB 14.0 (normal range for a male is 13-18)
HCT 43.1 (normal range for a male is 40-50)
PLT 216 (normal range is 150-450)

What other tests would be necessary to see if autoimmune hemolytic anemia is going on? (Yes, this man has had blood showing up in his urine regularly, too)

Upon reflection, I realize that this man has lost weight rapidly in the past year. Looks like this number means that his bone marrow isn't making enough red blood cells - from lack of nutritian - with liver effects possible? And/or, that his bone marrow is getting 'outstripped'