Test Overview

Test Methodology

Immunoassay

Test Usage

Documentation of immediate hypersensitivity reactions or diagnosis of patients with systemic mastocytosis. Elevated values are seen in patients with anaphylaxis, with urticaria, or following provocative skin tests.

Reference Range*

0.006 - 0.131 mg/24 hour

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

False negatives may occur if collection of the specimen is not performed near the time of allergic reactions.

Test Details

Days Test Performed

Tuesday, Friday

Analytic Time

4 - 11 days

Soft Order Code

HST24

MiChart Code

Histamine, 24 HR Urine

Synonyms

Laboratory

Sendout

Laboratory Reference

Mayo FH24U (57821) (Quest 4946X)

Looking to Order a Test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Specimen Requirements

Container

Normal Volume

4 mL aliquot of 24 hour urine collection

Minimum Volume

2 mL aliquot of 24 hour urine collection

Additional Information

Test sent to Mayo Medical Laboratories; performed by Quest Nichols Institute.

Billing Information

Fee Codes

CPT Code

83088

Have More Billing Questions?

Explore our helpful billing resources:

Billing Resources

Billing FAQ