Chromogenic Factor VIII Assay (Mailout)
| Label Mnemonic: | CH8 |
| Epic code: | LAB8633 |
| Downtime form: | Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Commercial Mailout Laboratory
6240-8 RCP
356-8593
6240-8 RCP
356-8593
Specimen(s):
Plasma
Collection Medium:
 |
| Light Blue top tube 2.7 mL (Na Citrate) |
Minimum:
Preferred Minimum: TWO 0.5 mL platelet-poor plasma
Absolute Minimum: 0.4 mL platelet-poor plasma (Note: This volume does NOT allow for repeat testing.)
Absolute Minimum: 0.4 mL platelet-poor plasma (Note: This volume does NOT allow for repeat testing.)
Delivery Instructions:
CRITICAL FROZEN. Freeze immediately. Separate specimens must be submitted when multiple tests are ordered.Turn Around
Time:
5 days upon receipt at reference laboratory
Comments:
The chromogenic factor VIII activity assay uses bovine reagents, is insensitive to emicizumab and lupus anticoagulant, and is adversely affected by the presence of direct factor X inhibitors or high concentrations of heparin.
Methodology:
Chromogenic using bovine reagents.
CPT Code:
85130