Control solution is a glucose-standard liquid you apply to a test strip in place of blood. If your meter reads within the range printed on the strip vial, you know your equipment is working properly. Most WaveSense users run a control test when they open a new vial of strips, if a meter has been dropped, if readings seem inconsistent with how they feel, or if strips have been exposed to heat or humidity. The two levels — low (Level 1) and high (Level 2) — let you verify accuracy across the range you actually test in, giving you added confidence in day-to-day monitoring.

To keep results reliable, store control solution at room temperature, note the discard date once opened (typically a few months), and always check that the strip and solution lots are compatible with your Keynote meter. Because control solution is not interchangeable across brands, using the WaveSense-specific formula ensures the printed target ranges match your system.

Whether you're restocking a single Keynote meter at home or maintaining testing accuracy as a caregiver, having control solution on hand is a small step that protects the integrity of every reading that follows.