House Dust Greer Labs (Allergen Specific IgE)
House Dust (Greer Labs), House Dust, Greer Labs (h1) , Antrim #31385, EPIC: LAB5653, SOFT: EHDG
Specimen Collection Criteria
Collect: One Gold-top SST tube.
Twenty individual allergen assays or allergen screens can be performed on one 5 mL Gold-top SST tube. Each allergen assay requires 100 mcL of serum.
Physician Office/Drawsite Specimen Preparation
Let specimen clot 30-60 minutes then immediately centrifuge to separate serum from cells. Refrigerate (2-8°C or 36-46°F) the centrifuged collection tube within two hours of collection.
Preparation for Courier Transport
Transport: Centrifuged collection tube, refrigerated (2-8°C or 36-46°F).
Severely lipemic or hemolyzed specimens.
0,Centrifuged SST tubes may be transported
and stored at ambient temperatures (2o to 30o C; 36o to 86o
F) for up to 48 hours. DO NOT FREEZE TUBES CONTAINING BLOOD. For longer
storage, the serum should be removed from the gel and refrigerated (2o
- 8o C) or frozen at -20o C or below.
Red-top tubes and Microtainers® may be stored at ambient temperatures
for up to 16 hours and for up to 3 days at refrigerator temperatures (2o
- 8o C). DO NOT FREEZE TUBES CONTAINING BLOOD. For longer storage,
the serum should be removed from the clot and refrigerated (2o - 8o
C) or frozen at - 20o C or below.
0,Serum specimens (pour-overs) may be stored
at room temperature (20o to 26o C; 68o to 79o F) for up
to 1 week, refrigerator temperature (2o to 8o C; 36o to 47o
F) for two weeks, and at -20o C (-4o F) for up to 3 months. Specimens
stored at - 70o C (-94o F) can be stored indefinitely.
Monday - Friday.
Results available the next business day.
Allergy Reference Range: Less than 0.35 kU/L.
|Less than or equal to 0.34
|Greater than 100
Fluorescence Enzyme Immunoassay (FEIA).
The allergen class may not be predictive of clinical disease in some patients. The diagnosis of allergy should be based upon patient history and clinical findings. The diagnosis of allergy should not be based upon laboratory findings alone.
A positive test result (class 1 or greater) is indicative of the presence of allergen-specific IgE and suggests an increased likelihood of allergic disease.
House dust is a mixture of potentially allergenic materials including fibers from several types of fabrics, cotton liners, feathers, other stuffing materials, bacteria, mold, fungus spores, food particles, human and pet dander, bits of plants and insects, and pet hair. Intense and lengthy exposure to organic dust may result in developing respiratory symptoms with irreversible physiologic changes. Symptoms that may develop include pulmonary fibrosis, progressive restrictive impairment, diffusion defect, hypoxemia, and a decreased lung function (1). Decreased flow rates, hyperinflation with greatly increased residual volume, decreased diffusing capacity, and a loss of pulmonary elastic recoil pressure (suggesting emphysema) have been found in physiologic studies of affected individuals. Allergic reactions to dust is a progressive disease. Treatment with corticosteroids, bronchodilators, and avoidance of allergen exposure (even for a prolonged time) is only minimally effective (1).
- Kaplan, Allen P M.D. Allergy. Churchill Livingstone: New York, pg 536, 1985.
Antrim #31385, EPIC: LAB5653, SOFT: EHDG