FLOW CD19/CD20 LYMPHOCYTES

Test Code

3040003297

Alias/See Also

1232000026

CPT Codes
86356 88184 88185

Includes

CD19(B4) %
CD19 (B4) ABSOLUTE
CD20 %
CD20 ABSOLUTE

Preferred Specimen

K2 EDTA Lavender Top Tube

Minimum Volume

1 mL

Other Acceptable Specimens

Sodium Heparin Green Top tube (contact Lab)

Instructions

Collect peripheral blood, BodyFluid, or CSF in 5 mL (1 mL minimum) K2 EDTA Lavender Top Tube, also acceptable Sodium Heparin Green Top Tube. Invert immediately and gently mix with anticoagulant. If NA HEP tube required, contact Lab for NA HEP Green top tubes.
Must be analyzed within 30 hours of collection

Transport Temperature

Room Temperature.

Methodology
Beckman Coulter Navios Sysmex XF 1600

Reference Range

CD19(B4) %
Males/Females:
0-30 Months: 11.0-45.0%
30 Months-18 Years: 9.0-29.0%
Adults: 2.0-21.0%
CD19 (B4) ABSOLUTE
Males/Females:
0-30 Months: 432-3345 /cmm
30 Months-18 Years: 200-1259 /cmm
Adults: 20-735 /cmm
CD20 %
Males/Females:
3.0-27.0%
CD20 ABSOLUTE
Males/Females:
1-559 /cmm

Performing Laboratory
LITTLE ROCK LABORATORY

Last Updated: August 26, 2026

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.