Anastrozole resulted in high RDW and low ferritin

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Anastrozole resulted in high RDW and low ferritin. Never had this issue before using Arimidex. Anyone else develop high RDW and low ferritin on ADEX?
My HGB,HCT,RBC are normal. Doc had me on 1mg/week with 100mg CYP/week.
Only plus to ADEX was that it normalized my GGT, which can ride high with TRT.

Thanks in advance