T Helper/Inducer: T Suppressor/Cytotoxic Lymphocyte Ratio


Sunquest Code:THTSB  
Epic Code:LAB3244Epic Name:T Cell Subset Profile
Synonyms:CD4:CD8 Lymphocyte Ratio; T4:T8 Lymphocyte Ratio; CD4 Count; HIV Infection Monitoring; HIV Profile; T Cell Subsets; THTS; ATG/CD3 Therapy Monitoring; OKT3/CD3 Therapy Monitoring; Solid Organ Transplant Immunophenotyping; T Lymphocyte Enumeration
Methodology:Multi-color flow cytometry
CPT Code:----------CPTCODES HERE----------
Test Includes:Total T lymphocytes and subset enumeration which includes percentages, absolute values per cu mm, T helper : T suppressor ratio.
Turnaround Time:Results are reported within 1-2 days.
Special Instructions:Provide diagnosis, age, collection date and time. Samples must be received and tested within 24 hours of collection. Testing is performed Mon-Fri 8 am - 5 pm only on specimens arriving in the Flow Cytometry lab on Saturday before noon. No testing is performed on Sundays or holidays. Samples are received in the Core lab when the Flow Cytometry lab is not staffed. Contact the IFC laboratory at 612-273-5248 for further information.
Associated Links:

IFC Reference Intervals



Collection Instructions

Specimen:Blood
Optimal Volume:4 mL
Minimum\Peds Volume:0.5 mL
Collection Instructions:
Samples must be maintained at room temperature. Samples must be less than 24 hours old at the time of testing and are received in the Flow Cytometry laboratory Mon-Fri and until noon on Saturday. Samples are received in the Core lab when the Flow Cytometry lab is not staffed. Specimens will be tested the next day of lab operation if less than 24 hours old. Samples are not tested on holidays. Contact the IFC laboratory at 612-273-5248 for further information.
Causes for Rejection:Blood with low WBC and/or percentage of lymphocytes, clotted specimen, and specimens greater than 24 hours old. Refrigerated specimens.


Processing and Shipping

Specimen Processing:Do not centrifuge. Store at room temperature. Send to Flow Cytometry lab within 24 hours of collection, Mon-Fri, 8 am - 4 pm and before noon on Saturdays.
Shipping Instructions:Ship at room temperature to arrive within 24 hours of collection., Do not send on weekends or the day before a holiday.
Test Performed at or Referral Lab Immunophenotyping and Flow Cytometry  (UMMC-East Bank)


Interpretive

Reference Range:

 

See Associated Links for Reference Intervals.

 

Use:Diagnosis and monitoring of acquired immunodeficiency syndrome (HIV infection).


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