Allergen, Grass, Timothy Grass
Also known as: TIM
Use
This test measures allergen-specific IgE levels to Timothy Grass using a quantitative ImmunoCAP fluorescent enzyme immunoassay. It aids in the assessment of patients with suspected allergic reactions to Timothy Grass, allowing healthcare providers to correlate laboratory results with clinical history and in vivo reactivity to specific allergens. It is intended for specialist use, particularly in scenarios where the clinical relevance of low IgE levels is undetermined.
Special Instructions
Multiple patient encounters should be avoided when preparing patients for allergen testing. Specimen collection instructions suggest separating serum from cells as soon as possible, ideally within two hours of collection, and measuring IgE levels quantitatively.
Limitations
Allergen-specific IgE concentrations detected by this test may not correlate with the degree of clinical response or skin testing results when challenged with a specific allergen. A negative test result does not rule out clinical allergy or anaphylaxis. Clinical interpretation should be guided by the correlation between lab results and clinical history in conjunction with in vivo reactivity tests.
New York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6265-3
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.25 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Collect using a serum separator tube. Separate serum from cells ASAP or within 2 hours of collection. Transfer to the transport tube.
Patient Preparation
Multiple patient encounters should be avoided.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |