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To view specimen requirements and codes please select your laboratory:
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2 mL serum
Serum collected in: Royal blue-top tube • Plasma collected in: Sodium heparin (green-top) or sodium heparin (royal-blue-top) tube
Red-top tubes (preferred): Centrifuge the specimen as soon as possible after complete clot formation has taken place. Transfer the serum to a plastic screw-capped vial and ship at refrigerated temperature.
Barrier gel separator tubes (acceptable): Centrifuge the specimen as soon as possible after complete clot formation has taken place. Do not place barrier tubes in an ice bath as freezing may prevent the barrier gel from adequately separating serum from cells. Transfer the serum to a plastic screw-capped vial and ship at refrigerated temperature.
Heparin tubes (acceptable): Centrifuge the specimen as soon as possible (within one hour after collection). Transfer the plasma to a plastic screw-capped vial and ship at refrigerated temperature.
Plastic screw-cap vial
Refrigerated (cold packs)
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 10 months
Tandem Mass Spectrometry
|Quest Diagnostics Nichols Institute|
|14225 Newbrook Drive|
|Chantilly, VA 20153|
Set up: Mon-Fri Morning; Report available: 3 days
Test is useful in the determination of certain genetic
disorders and Vitamin B12 deficiency.
The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.NOTE: The codes listed in the table below are not orderable Test Codes.
|Result Name||LOINC Code||Component Name|
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.