Fig 3. cfDNA levels in citrate and EDTA plasma samples from healthy volunteers and ICU patients.

Blood was collected from healthy volunteers (n = 7) and ICU patients (n = 9) into citrate or EDTA tubes and stored at room temperature (RT) for 0, 24, 48, or 72 hours prior to centrifugation. cfDNA levels were measured using a Picogreen assay.