Brigham & Women's Hospital Clinical Pathology & Laboratories

BWH: Hematology Alert Values

Alert values either greater than or less than the ranges indicated below will be called directly to the ordering location or practice site. For more information see the guidelines for notification of alert values.
 
Test
Less Than
Greater Than
WBC
1,500
30,000
WBC-CSF
-
50/mm3
Hematocrit (Hct)
20%
65%
Hemoglobin (Hgb)
6.0 g/dL
21.0 g/dL
Platelet Count (Plt)
40,000
800,000
Prothrombin Time (PT)
-
30 seconds
aPTT
-
100 seconds
Thrombin Time (TT)
-
110 seconds
Fibrinogen
100 mg/dL
-