Apolipoprotein B/A-I Ratio

Lipids marker

ApoB/ApoA1 Ratio

Apolipoprotein B/A-I Ratio

Category: Lipids
Unit: N/A

The balance between atherogenic particles (ApoB) and protective particles (ApoA-1). Considered the single most powerful lipid predictor of cardiovascular risk, superior to any cholesterol ratio.

PED Notes

AAS users get a double hit — ApoB rises (more atherogenic particles) while ApoA-1 drops (fewer protective particles), amplifying the ratio dramatically. A baseline of 0.55 can easily reach 1.2+ on an oral AAS cycle. The INTERHEART study (52 countries) found ApoB/ApoA-1 superior to any cholesterol ratio for predicting myocardial infarction, with a population-attributable risk of 54%. This is the most important single lipid marker for PED users to track.

When high

When elevated (>0.80):

The ratio improves by lowering ApoB AND raising ApoA-1 simultaneously:

To lower ApoB (numerator):

  • Citrus Bergamot -- 500mg 2x/day
  • Psyllium Husk -- 10-15g/day (binds bile acids, reduces LDL particle count)
  • Plant Sterols/Stanols -- 2g/day (blocks intestinal cholesterol absorption)
  • Reduce refined carbohydrates and sugar (lowers VLDL particle production)

To raise ApoA-1 (denominator):

  • Niacin (Extended-Release) -- 1500-2000mg/day (improves both sides of the ratio)
  • Omega-3 (EPA/DHA) -- 3-4g/day
  • Aerobic exercise -- 30-45 min, 3-5x/week

Critical interventions:

  • Eliminate oral AAS if ratio exceeds 1.0 — non-negotiable for cardiovascular safety
  • Favour injectable compounds with lower lipid impact (testosterone, nandrolone) over orals
  • Do not stack multiple oral AAS (e.g., Dianabol + Winstrol is a lipid catastrophe)
  • Monitor pre-cycle, mid-cycle (week 6-8), and 6-8 weeks post-cycle. Do not start a new cycle until ratio is below 0.80

Pharmacological options (when supplements and lifestyle are insufficient):

  • The ratio improves by lowering ApoB and raising ApoA-1 concurrently; address both sides with prescription therapy if needed
  • Rosuvastatin -- 5-20mg/day; first-line for lowering ApoB (numerator); preferred over atorvastatin/simvastatin in AAS users (lower CK impact)
  • Ezetimibe -- 10mg/day; additive ApoB reduction; minimal side effects
  • Bempedoic acid -- 180mg/day; statin alternative with no muscle uptake
  • PCSK9 inhibitors (alirocumab, evolocumab) -- 75-150mg subQ q2 weeks; ~50-60% ApoB reduction for resistant cases
  • Pemafibrate -- 0.2mg 2x/day where available; raises ApoA-1/HDL with minimal LDL impact
  • All require physician oversight and baseline liver/CK panel

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Frequently Asked Questions

Reference Ranges

Standard Range

0 - 0.9

VitalMetrics Range

0 - 0.6

Statistics