Laboratory Test Information Guide

Details for Allergen Specific IgE, Serum

Test Name: Allergen Specific IgE, Serum
Alternate Name(s): Immunoglobulin E, Allergen Specific
RAST Test
Laboratory: Core
Specimen Type: 5 mL Gold top Vacutainer tube or 6 mL Red top Vacutainer tube
Each test requires 50 L and 2 mL is sufficient for 10-12 tests.

Pediatric:
0-2 years: Red 0.5 mL Microtainer (this volume sufficient for maximum of 2 allergens)
2-10 years: 2 mL Red top (this volume sufficient for 10-12 allergens)
Collection Information: Allergen must be specified.

**NOTE: RASTI must be ordered once with each set of allergens on the same accession number. This adds interpretative information to the report.

The following are approved orderable allergens Cerner Code

Almond (f20)
Alternaria tenuis (m6)
Aspergillus fumigatus (m3)
Aspergillus niger (m207)
Beef (f27)
Brazil Nut (f18)
Candida albicans (m5)
Cashew Nut (f202)
Cat Dander (e1)
Cedar Pollen (t212)
Cefaclor (c7)
Cladosporium herbarum (m2)
Clam (f207)
Cockroach, German (i6)
Cod (f3)
Common Ragweed (w1)
Common Silver Birch (t3)
Cow's Milk (f2)
Crab (f23)
Derm. farinae (d2)
Derm. pteronyssinus (d1)
Dog Dander (e5)
Egg White (f1)
Egg Yolk (f75)
Grass Mix 1 (gx1)
Grass Mix 2 (gx2)
Halibut (f303)
Hazel Nut (f17)
Hollister-Steir Dust (h2)
Honey Bee Venom (i1)
Horse Dander (e3)
Latex (k82)
Lobster (f80)
Mucor racemosus (m4)
Mugwort Pollen (w6)
Mussels (f37)
Octopus (f59)
Oyster (f290)
Paper Wasp Venom (i4)
Peanut (f13)
Pecan Nut (f201)
Penicillium notatum (m1)
Penicilloyl G (c1)
Penicilloyl V (c2)
Pine Nut (f253)
Pistachio Nut (f203)
rARA h2 Peanut (f423)
Salmon (f41)
Scallops (f338)
Sesame Seed (f10)
Shrimp (f24)
Soya Bean (f14)
Squid (f258)
Sunflower Seed (k84)
Tilapia (f414)
Tomato (f25)
Tree Mix (tx4)
Tree Mix (tx6)
Trout (f204)
Tuna (f40)
Walnut (f256)
Weed Mix (wx3)
Wheat (f4)
White-Faced Hornet (i2)
Yellow Hornet Venom (i5)
Yellow Jacket Venom (i3)
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Referred out Tuesday-Thursday
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
15 days
Stat
N/A
 
Reference Range: IgE Activity Allergy Index:

<0.35 kU/L 0: No sensitivity
0.35 - 0.69 kU/L 1: Low
0.70 3.49 kU/L 2: Moderate
3.50 17.49 kU/L 3: High
17.50 49.99 kU/L 4: Very High
50.00 100.00 kU/L 5: Very High
>100.00 kU/L 6: Extremely High
Effective Date: 2010-03-16
Revised Date: 2018-09-20
Critical Value:  
Interpretive Comments: Clinician must determine clinical significance of specific IgE result after correlation with clinical exam and history.
Detectable levels are present in patients with allergic disease and in approx. 15% of asymptomatic healthy persons. Some with classic atopic symptoms may not have detectable levels. Specific IgE may decrease with time and lack of exposure to allergens.
Use caution when interpreting drug, venom and potential anaphylactic allergen results.
Special Processing:  
Comments: Testing limited to 10 allergens and to LHSC/SJH Allergists, Clinical Pharmacologists and Pediatric Respirologists.
All other test requests will require approval by the Clinical Biochemist.
Method of Analysis: PHADIA IMMUNOCAP (Fluorescent Enzyme Immunoassay)
Critical Information Required:  
Storage & Shipment: Store and ship frozen.
System Codes: 
Cerner
RASTI + Allergen Code
 
Referred To: In-Common Laboratories Inc.

Questions? Comments? Contact Laura Gopaul