FHSTW - Specimen: Histamine, Whole Blood

Test Catalog

Test ID: FHSTW    
Histamine, Whole Blood

Specimen Type Describes the specimen type needed for testing

WB Heparin

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Collect blood in a green top tube (sodium or lithium heparin). Submit 1 mL well-mixed blood in a plastic screw cap tube frozen.


NOTE: 1. Critical frozen. Separate samples must be submitted when multiple tests are ordered.

           2. Unacceptable: non-frozen samples

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

0.5 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected




Warm reject; Cold reject







Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.

Specimen TypeTemperatureTime
WB HeparinFrozen (preferred)180 days
 Refrigerated 6 hours
 Ambient 2 hours
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