Casandra
Casandra Test Code NG77789Version 1 (DRAFT)
Performing Lab
Glutamine Synthetase
Also known as: GS
Clinical Use
Order TestUse
Glutamine synthetase (GS) is strongly expressed in a majority of hepatocellular carcinoma, including cases of early HCC and low grade HCC, making it a useful immunohistochemical biomarker for the diagnosis and characterization of such liver lesions.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
New York Approved
Methodology
Immunoassay (IHC)
Biomarkers
Glutamine Synthetase
ProteinIHC
Expression • Ordinal Score (e.g., TPS, CPS, H-score)
Result Turnaround Time
24 hours
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
FFPE tissue block is preferred, or one unbaked unstained H&E slide (required) plus two to three positively charged unstained slides (cut at 4–5 μm). Block and slide identifiers must match specimen ID exactly.