Glutamine Synthetase by Immunohistochemistry
Also known as: GLUTSN IHC
Use
Immunohistochemical staining for glutamine synthetase is used for technical (stain-only) purposes to assess protein expression in tissue or cells. It is performed as a stain-and-return assay without pathologist interpretation, where the stained slide is returned to the submitter for interpretation. ARUP provides this technical service Monday through Friday, enabling earlier evaluation of glutamine synthetase expression in research or clinical contexts.
Special Instructions
Not provided.
Limitations
Specimens must be representative tissue or cellblock material; depleted or non-representative specimens are unacceptable and may be rejected. Slides must not be oven baked if precut. Frozen specimens are unacceptable. Specimen integrity may be compromised by excessive heat or improper fixation. Interpretation must be performed by the submitting institution; ARUP does not provide interpretive data.
New York Approved
Methodology
Immunoassay (IHC)
Biomarkers
Glutamine Synthetase
Protein
LOINC Codes
- 94736-6 - Tissue block ID Spec
Result Turnaround Time
1-5 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Not provided
Container
Tissue block or 5 unstained (3‑5 micron thick) positively charged slides (minimum 2)
Collection Instructions
Protect paraffin from excessive heat; if sending precut slides, do not oven bake
Storage Instructions
Room temperature or refrigerated; ship in cooled container during summer
Causes for Rejection
Non‑representative tissue type; depleted specimens
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinitely |
| Refrigerated | Indefinitely |
| Frozen | Unacceptable |
Other tests from different labs that may be relevant