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T Cells, CD4/CD8

T Cells, CD4/CD8

Alternate Test Name

T Lymphocyte Panel; CD4 & CD8 Panel; T-Cell Subsets; T-Cell Subsets by Flow Cytometry

Epic Mnemonic
Sunquest Mnemonic

LAB342
TCELB

Category

Sendouts

Methodology

Flow Cytometry

Test Performance Schedule

Monday - Friday

Result Availability

2 – 3 days

Specimen Required

Container

Lavender top (EDTA) tube 
NOTE: please collect a 3 mL (short) tube

Volume

Pref. Vol.: 3.0 mL whole blood
Min. Vol.: 1.0 mL whole blood

Collection Instructions

• Routine venipuncture
• Immediately after collection, gently invert tube 8 - 10 times
• Do not centrifuge
• Keep at room temperature

Transportation Instructions

• Room temperature
• Test must be performed within 48 hours of collection

Stability

• Room temperature: 48 hours
• Refrigerated: Unacceptable
• Frozen: Unacceptable

Causes for Rejection


• Grossly hemolyzed or clotted specimen
• Refrigerated
• Received more than 48 hours after collection

Remarks

Test Includes:
• White Cell Count
• Lymphocyte Automated %
• Lymphocyte Absolute Count
• CD19 B Cells %
• CD19 B Cells Absolute Count
• CD3+ T Cells %
• CD3+ T Cells Absolute Count
• CD4+ CD3+ T Cells %
• CD4+ CD3+ T Cells Absolute Count
• CD8+ CD3+ T Cells %
• CD8+ CD3+ T Cells Absolute Count
• CD4/CD8 Ratio

CPT Codes

86360, 86355, 86359

Effective/Revised

9/12/2019

Clinical Significance

Lorum Ipsum Opsom

 

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