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Test Compendium


Test Code

  • 6770

Test Synonym

  • CD19, LYMPHOCYTE SUBSET PANEL 2, Lymphocyte Enumeration T&B Cells, T & B CELL ENUMERATION

Specimen Requirements

  • Whole Blood


  • Lavender & Yellow Acd, Lavender Top Tube, Yellow Top Tube, Yellow Acd-A, Yellow Acd Sol B


  • Ambient

Turn Around Time

  • 3 days

CPT Codes

  • 86355,86359,86360
    *The CPT codes provided are based on AMA guidelines and are provided for informational purposes only. CPT coding is the responsibility of the billing entity. Please direct any questions regarding the CPT coding to the payer being billed.

Special Instructions

  • Lavender-top (EDTA) tube and yellow-top (ACD-A) or (ACD-B) tube. Maintain specimen at room temperature. Only stable 48 hours.

Additional Information

  • Submit both Lavender-top (EDTA) tube and yellow-top (ACD-A or ACD-B) tube Invert tube 8 to 10 times immediately after collection. To preserve cellular viability, collect specimen so it will arrive in the laboratory within 48 hours of collection. Indicate date and time of venipuncture on the tube(s) and on the test request form.

Specimen Stability

  • AMBIENT: 2 days REF: Unstable FRO: Unstable