X-Linked Hyper IgM Syndrome, Blood

Abbrev Code:XLHIGM   
Order Code:LAB6813Order Name:X Linked Hyper IgM Syn
Synonyms:X-Linked Hyper IgM Syndrome, B
Methodology:Flow cytometry
CPT Codes: 88184 x1, 88185 x6
Turnaround Time:Specimens are sent to reference laboratory Mon-Thur before 1300; results are reported within 3-4 days.
Special Instructions:Specimens must be received at the reference laboratory by 1600 Fridays. Providers name and phone number are required.

This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

Collection Instructions

Specimen:Whole blood
Optimal Volume:4 mL
Minimum\Peds Volume:1.2 mL
Container:Green (sodium heparin, no gel)
Causes for Rejection:Samples received by testing laboratory after 4 pm on Friday. Frozen or refrigerated specimens. Grossly hemolyzed or lipemic specimens.

Processing and Shipping

Specimen Processing:Whole blood. Do not process.
Shipping Instructions:Ship at room temperature to arrive within 24 hours of collection.
Test Performed at or Referral Lab Lab Sendouts  (Mayo Medical Laboratories)
Referral Lab number:XHIM


Reference Range:Present.

Screening for X-linked hyper-IgM (XL-HIGM) or CD40L deficiency, primarily in male patients less than 10 years of age.


Ascertaining XL-HIGM carrier status in females of child-bearing age less than 45 years of age.



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