Critical Values
PATHLAB CRITICAL VALUE
Biochemistry
Parameters |
Low Critical Value |
High Critical Value |
Bicarbonate |
<10 mmol/L |
>40 mmol/L |
Bilirubin ( New Born) |
- |
>18 mg/dL |
Calcium |
<7 mg/dL |
>13.0 mg/dL |
Glucose |
<40 mg/dL |
>400 mg/dL |
Phosphate |
<1 mg/dL |
- |
Potassium |
<2.5 mmol/L |
>6 mmol/L |
Sodium |
<120 mmol/L |
- |
Haematology
Parameters |
Low Critical Value |
High Critical Value |
White Blood Cells |
< 2 x 109 /L |
> 25 x 109/L |
Pack cell Volume (Haematocrit) |
< 18 % |
Female : > 55 % |
Haemoglobin |
< 6 g/dl |
Female : > 18 g/dl |
Platelet Count |
< 80 x 109 /L |
> 1,000 x 109 /L |
Reticulocyte |
None |
> 20 % |
Prothrombin Time |
None |
> 40 s |
Activated Partial Thromboplastin Time |
None |
> 90 s |
INR |
|
> 4.5 |
Peripheral Blood Film
|
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