Reticulocyte Count

When elevated (>100 x10^9/L — active erythropoiesis):

Elevated reticulocytes in an AAS user confirm the bone marrow is actively producing red cells:

• Check haemoglobin and haematocrit — if also elevated (Hb >180 g/L, HCT >0.52), consider blood donation
• If on Boldenone (EQ) — consider dose reduction if erythrocytosis is problematic
• Monitor iron studies — accelerated erythropoiesis depletes iron rapidly. Supplement if ferritin drops below 50 ug/L
• Hydration — 3-4L water/day to reduce blood viscosity

When low (<20 x10^9/L — inadequate bone marrow response):

Low reticulocytes on AAS is paradoxical and concerning:

• Iron deficiency — most likely cause from chronic blood donation. Check ferritin. Supplement with Iron Bisglycinate 25-50mg/day with Vitamin C 500mg
• B12 or Folate deficiency — required for DNA synthesis in erythroid precursors. Methylcobalamin 1000mcg/day, Methylfolate 800mcg/day
• Bone marrow suppression — rare but possible with hepatotoxic oral AAS at high doses

Post-blood donation monitoring:

• Reticulocytes peak 3-6 days after donation, normalise by 9-12 days
• If reticulocytes do NOT rise after donation, suspect iron deficiency limiting the marrow response

References:

• Bachman, E., Travison, T. G., Basaria, S., et al. (2014). Testosterone induces erythrocytosis via increased erythropoietin and suppressed hepcidin. The Journals of Gerontology: Series A, 69(6), 725-735. DOI: 10.1093/gerona/glt154
• Heiland, C. E., Schickel, Y., Lehtihet, M., Borjesson, A., & Ekstrom, L. (2023). Supra-physiological doses of anabolic androgenic steroids impact erythropoietin and blood parameters. Drug Testing and Analysis, 15, 599-604. DOI: 10.1002/dta.3452
• Goodnough, L. T., Nemeth, E., & Ganz, T. (2010). Detection, evaluation, and management of iron-restricted erythropoiesis. Blood, 116(23), 4754-4761. DOI: 10.1182/blood-2010-05-286260