Sorted By Test Name - Mayo Medical Laboratories

FLEP
91339
LEPTO
9697
allergic reactions to insect venom allergens, drugs, or chemical allergens.
Interpretation: Detection of IgE antibodies in serum (Class 1 or greater) indicates an increased
likelihood of allergic disease as opposed to other etiologies and defines the allergens that may be
responsible for eliciting signs and symptoms. The level of IgE antibodies in serum varies directly with the
concentration of IgE antibodies expressed as a class score or kU/L.
Reference Values:
Class IgE kU/L Interpretation
0 Negative
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 > or =100 Strongly positive Reference values
apply to all ages.
Clinical References: Homburger HA: Allergic diseases. In Clinical Diagnosis and Management by
Laboratory Methods. 21st edition. Edited by RA McPherson, MR Pincus. New York, WB Saunders
Company, 2007, Chapter 53, Part VI, pp 961-971
Leptin
Reference Values:
Units: ng/mL
Age Range
Adults (BMI=22)
Males 0.7 - 5.3
Females 3.3 - 18.3
Contact laboratory for other BMI reference ranges.
Test Performed By: Esoterix Endocrinology
4301 Lost Hills Road
Calabasas Hills, CA 91301
Leptospira Antibody, Serum
Clinical Information: Leptospirosis is a zoonotic disease of worldwide prevalence. Although wild
mammals are the primary natural reservoir of pathogenic strains, domestic animals represent a major
source of human infection. Most often, transmission is indirect-by human contact with soil, food, or water
contaminated by urine from an infected animal. The clinical manifestations of leptospirosis are variable,
ranging from a mild infection with fever, chills, headache, conjunctivitis, myalgia, and gastrointestinal
symptoms to icteric disease with severe kidney and liver involvement. Leptospira organisms may be
found in the blood at the onset of disease and may persist for approximately 1 week. The organisms also
may be found in the urine after week one of the disease. They may persist in the urine for 2 to 3 months;
however, shedding may be intermittent and the numbers of organisms present may be low. Urine must be
cultured immediately because the organisms cannot survive in acidic urine for more than a few hours.
Leptospirosis is accompanied by a brisk antibody response.
Current as of January 4, 2013 7:15 pm CST 800-533-1710 or 507-266-5700 or MayoMedicalLaboratories.com Page 1103