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Test Code FCUI CU Index

Additional Codes

 

MAYO Test ID

FCUIX

EPIC Test ID

LAB2972

 

Method Name

Ex Vivo Challenge, Cell Culture and Histamine Analysis

Reporting Name

CU Index

Specimen Type

Serum


Specimen Required


Specimen Type: Serum

Container/Tube: Red or SST

Specimen Volume: 2 mL

Collection Instructions: Draw 5 mL blood in a serum separator tube (SST) (plain, red-top tube is acceptable). Separate from cells within 2 hours of draw. Send 2 mL of serum refrigerated in a plastic vial.

 

Note: 1) Patients taking calcineurin inhibitors should stop medication 72 hours prior to draw.

         2) Patients taking prednisone should be off their medication for 2 weeks prior to draw.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  60 days
  Ambient  7 days

Reject Due To

Hemolysis:

NA

Thawing:

Warm OK; Cold OK

Lipemia:

NA

Icterus:

NA

Other:

NA

Reference Values

< 10.0

 

The CU Index test is the second generation Functional Anti-FceR test. Patient with a CU Index greater than or equal to 10 have basophil reactive factors in their serum which supports an autoimmune basis for disease.

 

Day(s) and Time(s) Performed

Monday, Wednesday, Friday

Analytic Time

2 - 3 days

Performing Laboratory

Viracor Eurofins

Test Classification

This test was developed and its performance characteristics determined by Viracor Eurofins. It has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

86352

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FCUIX CU Index 63369-3

 

Result ID Test Result Name Result LOINC Value
FCUIX CU Index 63369-3