The further you progress in treatment most of the values on the CBC (complete blood count) will fluctuate over and under the reference intervals.
I just popped into the LabCorp site and did a print screen of one of my labs during treatment. Not sure which week but I think it was after I started Procrit so maybe week 18 or so.
Notice how many values are in the High column and how many are in the Low Column.
The two values we tend to pay particular attention to are
Hemoglobin (the 10th one down) [to check for Anaemia
Absolute Neutrophils Count (7th one down) to check for Neutropenia