Lab Test

White Pine (Allergen Specific IgE)

Pinus strobus, White Pine Tree, White Pine (t16) , Antrim #31665, EPIC: LAB5736, SOFT: EWHP

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).

Rejection Criteria

  • Plasma specimens.
  • Severely lipemic or hemolyzed specimens.

Storage

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 - 20oC 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 - 70oC (-94o F) can be stored indefinitely.

Performed

Monday - Friday.
Results available the next business day.

Reference Range

Allergy Reference Range: Less than 0.35 kU/L. 

Range (kU/L) Class Interpretation
Less than or equal to 0.34 0 Negative
0.35-0.69 1 Low
0.70-3.49 2 Medium
3.50-17.49 3 High
17.50-49.99 4 Very High
50.0-100.0 5 Very High
Greater than 100 6 Very High

Test Methodology

Fluorescence Enzyme Immunoassay (FEIA).

Interpretation

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.

Clinical Utility

Positive assay results indicate a high probability of allergic disease. Negative assay results effectively rule out allergy induced by those allergens.

Clinical Disease

The primary cultivated sources of pollen allergens aside from a few grass species, such as Timothy grass and the sugar beet, are trees.

Transmission of tree pollen, such as white pine pollen, is aided by warm, dry, rapid air currents that typically occur during midday and early afternoon (1). Pollen counts are decreased after periods of rain. Of the pollen allergens, tree pollens are the heaviest and therefore do not travel very far from the pollen source (2). Pine pollen in particular is quite dense and typically falls straight down so that very little pollen is spread outward. Therefore, pine pollen possesses less allergenic potential than other tree species.

The airborne transmission of white pine pollen produces itchy, watery eyes, scratchy throat, sneezing, and coughing.

Reference

  1. Middleton, E., Charles Reed, Elliot Ellis, N. Franklin Adkinson, John Yunginger, and William Busse. Allergy Principles and Practice. Volume I. 4th ed. Mosby: St. Louis. 1993. Pp. 485, 488, 495.
  2. Korenblat, Phillip MD, H. James Wedner MD. Allergy Theory and Practice. 2nd ed. W.B. Saunders Co.: Philadelplhia. 1992. Pp. 273.

CPT Code

86003.

Test Codes

Antrim #31665, EPIC: LAB5736, SOFT: EWHP

Last Updated

7/11/2019

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This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.