RI Autoantibody
Test Mnemonic
RIAUT
CPT Codes
- 83520 - QTY (1)
Aliases
- ANNA - II
- Anti-Neuronal Nuclear Ab, type II
- Anti-RI
- Recombx Ri Autoantibody Test
Performing Laboratory
Athena Diagnostics
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL | Serum | No additive (Red) | Refrigerated | Serum must be separated from cells within 48 hours of collection. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL | Serum | SST (Gold) | Refrigerated | Serum must be separated from cells within 48 hours of collection. | |
| 2 mL | Cerebrospinal fluid (CSF) | Sterile container | Refrigerated | Collect in a sterile, leak-proof container. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 72 hours |
| Refrigerated | 28 days |
| Frozen | 28 days |
Days Performed
Mon - Fri
Turnaround Time
4 - 6 days
Methodology
| Name | Description |
|---|---|
| Automated Nanoliter Scale Immunoassay |
Reference Range
| RI Autoantibody | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Serum <1:50 CSF <1.1 |
Special Info
Serum must be separated from cells within 48 hours of collection.
Clinical Info
Detection of anti-Ri antibodies using recombinant human antigens.