Lipid Panel Timing with Repatha
Yes, you can have a lipid panel drawn on the day of your next Repatha dose, and the FDA specifically recommends measuring LDL-C just prior to the next scheduled dose for patients on the monthly regimen.
Optimal Timing for Lipid Monitoring
The FDA label for Repatha explicitly addresses this question 1. When monitoring LDL-C levels in patients receiving the 420 mg once-monthly dose, the recommendation is to measure LDL-C just prior to the next scheduled dose because LDL-C levels can vary during the dosing interval in some patients. This represents the trough level and provides the most standardized measurement point.
Key Timing Considerations
For the 420 mg monthly regimen:
- Draw lipids immediately before (on the same day as) your next injection
- This captures the trough level when LDL-C may be at its highest point in the dosing cycle
- Provides consistent, reproducible measurements for monitoring therapy
For the 140 mg every-2-week regimen:
- Timing is less critical as levels remain more stable
- Can still draw on the day of injection for convenience
When to Check Lipid Levels
The LDL-lowering effect can be measured as early as 4 weeks after starting Repatha 1. Your healthcare provider will determine the appropriate monitoring schedule based on your specific clinical situation and treatment goals, as outlined in the 2018 ACC/AHA cholesterol guidelines 2.
Practical Points
- Fasting is not required for routine lipid monitoring in most cases, which improves patient compliance and safety 3
- The timing recommendation is specifically about the dosing cycle, not about fasting status
- Schedule your blood draw appointment for the same day as your injection for convenience
This FDA-recommended approach ensures accurate, consistent monitoring of your response to Repatha therapy.