A
5200 Harry Hines Blvd.
,
Dallas
,
TX
75235
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General Information
Alias: Anti-Hemophilic Factor, Hemophilia A Factor
Performed: Mon-Fri, 0700-1530
Turn Around Time: 1-3 days
CPT Codes: 85240
Performed By: Hematology
Notes: Results not affected by hemoglobin up to 500 mg/dL, triglycerides up to 1000 mg/dL and bilirubin up to 26 mg/dL.
Clinical Utility: Quantitative determination of Factor VIII activity is utilized to aid in in the diagnosis of congenital or acquired Factor VIII deficiency. Congenital Factor VIII deficiency (hemophilia A) is an inherited sex-linked recessive disorder that causes severe bleeding.
Unacceptable Conditions: QNS, clotted, severely hemolyzed, icteric, lipemic, refrigerated, or on ice
Components
| Name |
Method |
Sex |
Age Range |
Ref. Range Low |
Ref. Range High |
Units |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
0 Minutes - Day 1 |
50 |
178 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
Day 1 - Day 4 |
50 |
178 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
Day 5 - Day 29 |
50 |
154 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
Day 30 - Day 89 |
50 |
157 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
Day 90 - Day 179 |
50 |
125 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
Day 180 - Day 364 |
50 |
109 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
1 Year - 5 Years |
59 |
142 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
6 Years - 10 Years |
58 |
132 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
11 Years - 16 Years |
53 |
131 |
% |
| Factor VIII Activity |
Activated Partial Thromboplastin Clot Based Assay |
|
17 Years - 150 Years |
50 |
150 |
% |
Specimen Requirements
| Type |
Container |
Volume |
Units |
Collection / Delivery |
Storage / Transport |
Off Campus |
| Blood |
Blue Na Citrate, 3mL |
Draw to fill line |
|
Send to Lab within 3 hours of collection. |
Room Temperature |
Deliver to Logistics Hematology Lab via STAT courier
|