Casandra
Casandra Test Code QD32014Version 1 (DRAFT)
Performing Lab
IGG4, IHC with Interpretation
Clinical Use
Order TestUse
Immunohistochemical evaluation of tissue for IgG4-positive plasma cells to support the diagnosis of IgG4-related disease.
Special Instructions
Not provided.
Limitations
Specimens must be formalin‑fixed; frozen specimens are unacceptable. Slides or blocks fixed in other fixatives or that are overheated or frozen may yield unsatisfactory results.
Test Details
Methodology
Immunoassay (IHC)
Biomarkers
IgG4
ProteinIHC
Expression • Ordinal Score (e.g., TPS, CPS, H-score)
Result Turnaround Time
3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Tissue (FFPE)
Volume
1 Block or 3 Slides
Minimum Volume
1 Block or 3 Slides
Container
Paraffin embedded tissue block
Collection Instructions
Include pathology report; indicate histology specimen ID and source of specimen in comments; send specimen in an IHC Specimen Kit Box; requires TSO form.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinite |
| Refrigerated | Indefinite |
| Frozen | Unacceptable |
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