| Laboratory: | Clinical Immunology |
| Test Name: |
CD4/CD8 - HSC - (B)
Test Code:
PB48
|
| Clinical Information: |
Specimen stability: <24 hour optimum; 24-48 hours sub-optimal. Samples analyzed between 24 and 48 hours post collection will have absolute counts which, on average, are 15% lower.
Recommended use: Monitoring of CD4 and other T-Lymphocyte subsets related to follow up of acquired immunodeficiency. |
| Collection Devices: |
Preferred Device:
1 - EDTA 4 mL NO GEL Tube(s) - Full Tube Collection
EDTA 4 mL NO GEL Tube(s) - Full Tube Collection Manufacturer: Becton Dickinson & Company Catalogue #: 367861 Send specimen in original tube; do not aliquot. |
| Specimen Required: |
Blood: 2.0 mL
Full draw preferred. Date and time of draw is required. Keep specimens at room temperature (18-26°C). For serial monitoring, we recommend that specimen draws be performed at the same time of day due to circadian variation. |
| Referral: |
|
| Requisition: | |
| Reference Values: |
The appropriate age-related reference values will be provided on the report.
|
| Availability: |
Weekdays
Samples must be received by 4:00 p.m. except Fridays and days preceding a 3 day long week-end (extended to 5:00 p.m. cutoff)
|
| See Also: | |
| More Information: |
Reasons for Rejection:
Hemolysis - gross Lipemia - gross Icterus - n/a Other - ACD, sodium or lithium heparin blood specimen or specimen in aliquot tube (not in original vacutainer) Age - > 48 hours |