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HelpTest ID XHIM X-Linked Hyper IgM Syndrome, Blood
Useful For
Screening for X-linked hyper-IgM (XL-HIGM) or CD40L deficiency, primarily in male patients younger than 10 years of age
Ascertaining XL-HIGM carrier status in females of child-bearing age younger than 45 years of age
Method Name
Flow Cytometry
Reporting Name
X-Linked Hyper IgM Syndrome, BSpecimen Type
WB Sodium HeparinShipping Instructions
It is recommended that specimens arrive within 24 hours of draw.
Samples arriving on the weekend and observed holidays may be canceled.
Necessary Information
Ordering physician's name and phone number are required.
Specimen Required
For serial monitoring, we recommend that specimen draws be performed at the same time of day.
Container/Tube: Green top (sodium heparin)
Specimen Volume: 4 mL
Collection Instructions:
1. Send specimen in original tube. Do not aliquot.
2. Specimens received more than 72 hours after collection will be rejected and the assay will not be performed.
Specimen Minimum Volume
1.2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| WB Sodium Heparin | Ambient | 72 hours | GREEN TOP/HEP |
Reference Values
Present
Day(s) Performed
Monday through Friday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
88184-Flow cytometry, cell surface, cytoplasmic
88185 x 6-Each additional marker
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| XHIM | X-Linked Hyper IgM Syndrome, B | 98239-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 82964 | CD40 Ligand Expression | 98240-5 |
| 29040 | CD40muIg (Function) | 98241-3 |
| 23901 | Interpretation | 69052-9 |