ACTH Blood Test: Timing, Handling and Reliable Results
Endocrine Testing Lab Interpretation 2026 Update Patient-Friendly An ACTH blood test can look falsely low if the sample warms or waits too long, and it can look physiologically high after acute stress, poor sleep, or a late-day draw. For a meaningful result, clinicians usually pair ACTH with cortisol at roughly 8 am, use the laboratory’s […]