Test Overview
Test Methodology

Flow cytometry

Test Usage

Screening for common variable immunodeficiency and hyper-IgM syndromes, assessing B-cell subset reconstitution after stem cell or bone marrow transplant, or assessing response to B-cell-depleting immunotherapy
This test is not indicated for the evaluation of lymphoproliferative disorders (eg, leukemia, lymphoma, multiple myeloma).

Reference Range *

Interpretive report provided

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday
Analytic Time

4 - 5 days

Soft Order Code
MMLR
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo IABCS
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Collect specimen in 2 EDTA tubes. Maintain one at room temp and one at refrigerated temp. Send to Specimen Processing with only this patient in each bag as to not get them mixed up.
    Specimens must be received in the laboratory at Mayo on a weekday or by 4 p.m. on Friday. Collect Monday -Thursday early morning until noon, and send to SP with a stat courier.

    Special Handling

    Specimens must be received at Mayo weekdays and by 4 p.m. on Friday. It is recommended that specimens arrive within 24 hours of collection.

    Two separate EDTA whole blood specimens are required: 1 refrigerated and 1 at ambient transport temperature.

    Normal Volume
    6 mL whole blood x2; maintain one tube at room temp and one tube at refrigerated temp
    Minimum Volume
    5 mL x2; maintain one tube at room temp and one tube at refrigerated temp
    Storage Temperature
    One tube ambient, one tube refrigerated
    Rejection Criteria
    Not received within 48 hrs, collected on a Friday-Monday, specimens not maintained at room AND refrigerated temperatures
    Additional Information

    Test performed by Mayo Clinic Laboratories

    Billing
    CPT Code
    86355-B cells, total count, 86357-Natural killer (NK) cells, total count, 86359-T cells, total count, 86360-Absolute CD4/CD8 count with ratio, 86356 x7 - Mononuclear cell antigen, quantitative
    NY State Approved
    No