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HelpTest Code CLD18 Claudin 18 (CLDN18) (43-14A), Semi-Quantitative Immunohistochemistry, Manual
Shipping Instructions
Attach the green "Attention Pathology" address label (T498) to the outside of the transport container before putting into the courier mailer.
Necessary Information
A pathology/diagnostic report and a brief history are required.
Specimen Required
Specimen Type: Tissue
Supplies: Pathology Packaging Kit (T554)
Collection Instructions: Formalin-fixed, paraffin-embedded tissue block; or 3 unstained glass, "positively charged" slides with 4-microns formalin-fixed, paraffin-embedded tissue
Additional Information: One slide will be stained with hematoxylin and eosin and returned.
Useful For
Identification of tumor cells expressing claudin 18
As an aid in screening patients who may be eligible for VYLOY (zolbetuximab) treatment
Reporting Name
CLDN18, SemiQuant IHC, ManualSpecimen Type
SpecialSpecimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Special | Ambient (preferred) | ||
| Refrigerated | |||
Reject Due To
| Decalcified paraffin embedded tissue Wet/frozen tissue Cytology smears Nonformalin fixed tissue including alcohol-formalin-acetic acid (AFA), 95% ethanol, PREFER fixatives or Zinc formalin Nonparaffin embedded tissue Noncharged slides ProbeOn slides |
Reject |
Reference Values
An interpretive report will be provided.
Day(s) Performed
Monday through Friday
Report Available
5 to 7 daysSpecimen Retention Time
Until reportedPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
88360
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CLD18 | CLDN18, SemiQuant IHC, Manual | 105011-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 620666 | Interpretation | 50595-8 |
| 621004 | Participated in the Interpretation | No LOINC Needed |
| 621005 | Report electronically signed by | 19139-5 |
| 621006 | Material Received | 81178-6 |
| 621007 | Disclaimer | 62364-5 |
| 621008 | Case Number | 80398-1 |
Forms
If not ordering electronically, complete, print, and send a Immunohistochemical (IHC)/In Situ Hybridization (ISH) Stains Request (T763) with the specimen.