Serotonin, Whole Blood

Primary unit: ng/mL
LOINC codes: 2939-7
Tests that measure Serotonin, Whole Blood: Labcorp 1, Quest Diagnostics 1

Tests

Check the catalog code, specimen, method and preparation for every test that measures Serotonin, Whole Blood. Select up to five tests to compare them side by side.

Labcorp 1 test

Single-analyte tests

Serotonin, Whole Blood 120089
Blood · Fasting not stated · Turnaround 3 - 6 days
Method and collection
Method
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Preparation
Monoamine oxidase inhibitor drugs should be discontinued for at least one week prior to sampling since they tend to increase the level of serotonin.
Collection
Sample collection practices that prevent blood clotting and oxidation of serotonin are imperative. Collect three tubes (4 mL each) whole blood. Invert tubes at least ten times to ensure thorough distribution of EDTA. Immediately transfer 10 mL whole blood to transport tube containing 75 mg ascorbic acid. Thoroughly mix by inverting whole blood/ascorbic acid mixture another ten times. Freeze transport tube and send entire collection to the laboratory. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Reference notes
See table. Age (y) Male (ng/mL) Female (ng/mL) 0 to 12 y 84−376 84−376 13 to 17 y 42−292 42−292 >17 y 56−248 56−248 Reference Interval developed by in-house study.
Labcorp catalog page

Quest Diagnostics 1 test

Single-analyte tests

Serotonin, Blood 818
Blood · Fasting not stated · Turnaround Set up: Mon, Wed, Fri (p.m.); Report available: 5 days
Method and collection
Method
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Collection
Proper specimen collection, storage and shipment are critical for serotonin whole blood analysis. Strict adherence to the following specimen collection instructions will ensure the most meaningful results. 1. Draw blood into the EDTA 7.2-mg Vacutainer® tube. 2. After drawing the blood, mix well and immediately transfer all blood to the enclosed container, which contains 35 mg of ascorbic acid. 3. Mix well and freeze immediately. 4. Ship frozen. Expiration date for ascorbic acid container is the same as the EDTA tube provided in the kit.
Reference notes
56-244 ng/mL
Quest Diagnostics catalog page

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Sources

Labcorp test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 2939-7
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Serotonin, Whole Blood
Registered studies that measure Serotonin, Whole Blood, on the U.S. National Library of Medicine registry.

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

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