Critical Values - Hematology
If a critical is encountered during routine Hematology testing, the ordering physician is immediately contacted with the finding. If this occurs after regular office hours, the ordering physician (or physician on-call) will be contacted via answering service or at home. A Hematopathologist is notified and will provide a consultative service when required.
Test |
Less Than |
Greater Than |
Comments |
|
Hemoglobin (g/L) (Adult) |
60 g/L |
200 g/L |
excluding newborns |
|
Hematocrit (L/L) |
0.15 L/L |
0.70 L/L |
|
|
Platelet count |
20 x 109/L |
1500 x 109/L |
|
|
Lymphocytes |
300 x 109/L |
||
|
Granulocytes |
0.5 x 109/L |
100 x 109/L |
|
|
PT (INR) |
5.0 |
||
|
aPTT (seconds) |
60 seconds |
||
|
Fibrinogen (g/L) |
1 g/L |
||
|
Malaria |
All |
||
|
Blast Cells |
5% |
If a new finding |
|
|
Schistocytes |
|
2+ |
excluding neonates, chronic renal failure and hyposplenism |
|
Sickle Cells |
any |
any |
If a new finding |
