Click here for more information about laboratory operations and procedures
If you have additional questions regarding this test, please call: 415-353-1667
|Test code||TBHSD (Blood) (with CBC & diff)
TBHSBF (body fluid)
|In House Availability||Monday-Saturday (day shift)|
|Container type||Lavender top|
|Amount to Collect||3 mL blood|
|Sample type||EDTA whole blood|
|Preferred volume||3 mL blood|
|UCSF Rejection Criteria||Refrigerated sample received. Sample > 48 hours old when received.|
|Processing notes||DO NOT refrigerate, store at room temperature and ship to China Basin.
Order CBCD if not already ordered on the same sample.
|Units||% and x106 cells/L|
CD4/CD8 (H/S) Ratio: 0.7-3.9
Note: Reference values are for ≥ 18 year olds. For pediatric ranges please see:
Kotylo, PA, et al. 1993. Reference ranges for Lymphocyte Subsets in Pediatric Patients. Am. J. Clin. Pathol 100:111-115
Lin, S-C., et al. 1998. Age-Related Changes in Blood Lymphocytes of Chinese Children. Ped. Allergy Immunol. 9:215-220
Melaranci, C., et al. 1992. T. Cell Subpopulations in Pediatric Healthy Children: age-normal values. J. Clin. Lab. Immunol. 30:143-149
|Synonyms||CD3; CD4; CD19; CD56; T cells; B cells; NK cells; CD4/CD8 ratio; H/S ratio; helper/suppressor ratio; cytotoxic T cells; suppressor T cells; absolute T cell count; T cell markers; T subsets; B cell markers; T&B cells; T & B cells; T and B cells; T4/T8 ratio; flow cytometry|
|Turn around times||2-3 days|
|Additional information||Absolute cell counts require a CBC w/Differential on the same sample, which will be ordered and charged separately if not otherwise available.
CD4 results are automatically forwarded to California public health per regulations. However, this does not absolve the ordering provider from any additional reporting if such is required.
|CPT coding||86360, 86359, 86357, 86355, 85025
|Last Updated||6/21/2016 14:04:39|