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Department of Pathology
Case of the Month February 2003
A 16 YEAR OLD FEMALE WITH SEVERE BLEEDING AFTER A MINOR FALL
Darren Harris, MD, and Patricia Canfield, MD
Laboratory Tests
| Test Name (units) |
Patient Result |
Normal Range |
|
|
 |
| WBC (X103/UL) |
7.6 |
3.5-11.0 |
|
| RBC (X106/UL) |
3.6 |
3.8-5.2 |
|
| Hemoglobin (g/dL) |
10.5 |
11.2-15.2 |
|
| Hematocrit (%) |
31.9 |
33.5-45.2 |
|
Platelets
(X103/UL) |
273 |
140-450 |
|
| PT (sec) |
11.1 |
9.5-12.5 |
|
| PTT (sec) |
42.2 |
24.8-37.3 |
|
| |
|
|
|
| Platelet Function Analysis: |
|
|
|
| Collagen:Epinephrine (sec) |
>300 |
94-193 |
|
| Collagen:ADP (sec) |
>300 |
71-118 |
|
Factor VIII
(% of normal) |
39 |
50-150 |
|
| Ristocetin Cofactor Activity |
36 |
70-116 |
|
| vWF Antigen (% of normal) |
34 |
50-150 |
|
Agarose Gel Electrophoresis of plasma vWF:
Normal Patient |
|
|
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