Chronic Urticaria - Pooled Donor Basophil Activation Testing (PD-BAT)

Alphabetical Test listing

Chronic Urticaria - Pooled Donor Basophil Activation Testing (PD-BAT)-994

Test name:

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Chronic Spontaneous Urticaria
Autoimmune chronic urticaria
UC Functional Anti-FceR Auto Antibody
IgE Receptor Ab
Basophil Activation Testing

Useful for:

This test measures the extent to which patient serum activates pooled donor basophils in an indirect basophil activation test (PD-BAT for Chronic Urticaria).

Limitations:

A positive result does not indicate which autoantibody (anti-IgE, anti-FceRI or anti-FceRII) is present.

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Red serum vial/tube, 5 mL

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediately following collection, mix sample by gently inverting 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection
Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
Freeze

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Transport and stability:

Frozen (preferred) - 2 months

Freeze/thaw cycles - stable x3

Refrigerated - 14 days

Ambient - 1 day

Reason for rejection:

Lipemic, hemolyzed, cloudy or microbiologically contaminated specimens

Performing lab:

LabCorp Burlington (505800); R-NX

TAT:

7 - 10 days

Method:

Basophil Activation Testing

Reference ranges:

Pooled Donor - BAT CU 0.00 - 10.60

CPT codes:

86849

Date created:

07/11/2025

Review date:

07/11/2025