Critical values

Critical Values

Haematology

Test Less Than More Than
Haemoglobin 7 g/dl 20 g/dl
Hematocrit (Packed Cell Volume) 20 vol% 60 vol%
WBC 2000 30000
Platelet Count 20,000 10,00,000
Prothrombin Time None 30 seconds or INR more than 3
Activated Partial Thromboplastin Time None 100 seconds

Biochemistry

Test Less Than More Than
Ammonia None 40
Amylase None 200
Arterial pCo2 20 75
Arterial pH 7.1 7.59
Arterial pO2(adult) 40 None
Arterial pO2(Newborn) 37 92
Bicarbonate 10 40
Bilirubin,Total(Less than 3months of age) None 20
Calcium 6.0 14
Carbon dioxide 11 40
Chloride 80 115
Creatine Kinase None 500
CK-MB None 16
Creatinine None 5.0
Glucose 45 500
Glucose (Newborn) 30 300
Magnecium 1.0 4.7
Phosphorus 1.1 None
Potassium 2.8 6.2
Potassium (Newborn) 2.5 8.0
Sodium 120 160
Troponin T None 30
Urea 4 171