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Test ID RPR10 Respiratory Profile, Region 10, Southwestern Grasslands (OK, TX), Serum

Useful For

Assessing sensitization to various inhalant allergens commonly found in the Southwestern grasslands region, including Oklahoma and Texas

 

Defining the allergen responsible for eliciting signs and symptoms

 

Identifying allergens:

-Responsible for allergic response or anaphylactic episode

-To confirm sensitization prior to beginning immunotherapy

-To investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens

 

This test is not useful for patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in whom the medical management does not depend upon identification of allergen specificity.

Specimen Type

Serum


Ordering Guidance


For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies



Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial 

Specimen Volume: 2 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  90 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK

Reference Values

Specific IgE:

Class

IgE kU/L

Interpretation

0 

<0.10 

Negative 

0/1 

0.10-0.34 

Borderline/equivocal 

1 

0.35-0.69 

Equivocal 

2 

0.70-3.49 

Positive 

3 

3.50-17.4 

Positive 

4 

17.5-49.9 

Strongly positive 

5 

50.0-99.9 

Strongly positive 

6 

≥100 

Strongly positive 

 

Reference values apply to all ages.

 

Concentrations of 0.70 kU/L or more (class 2 and above) will flag as abnormally high.

 

Total IgE:

Age

Reference interval (in kU/L)

0-5 months

≤13

6-11 months

≤34

1 and 2 years

≤97

3 years

≤199

4-6 years

≤307

7 and 8 years

≤403

9-12 years

≤696

13-15 years

≤629

16 and 17 years

≤537

18 years and older

≤214

Day(s) Performed

Monday through Friday

Report Available

Same day/1 to 3 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82785-IgE

86003 x 25 Each individual allergen

Forms

If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen.

Secondary ID

62056