Table 4.

Level 1 evidence—alert thresholds established by clinical outcome studies.a

Analytes, conventional units1a. Laboratory and clinicians1b. Clinicians1c. Laboratory
Low threshold, median (range) [n]High threshold, median (range) [n]Low threshold, median (range) [n]High threshold median, (range) [n]Low threshold, median (range) [n]High threshold, median (range) [n]
Potassium, mmol/L6.2 (6.2–6.2) [1]6.3 (6.3–6.3) [1]7.0 (7.0–7.0) [1]
Sodium, mmol/L120 (120–120) [2]155 (155–155) [1]
Calcium, mg/dL7.0 (7.0–7.0) [1]12.0 (12.0–12.0) [1]12.0 (12.0–12.0) [1]
Hemoglobin, g/dL7.0 (7.0–7.0) [1]
Fibrinogen, mg/dL229 (229–229) [1]
Lactate, mg/dL36 (36–36) [1]
  • a n = no. of papers used as source of data.