A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Homocysteine, Serum

Test Code
LAB825


CPT Codes
83090

Preferred Specimen
Red no-additive no gel


Minimum Volume
0.5 mL


Instructions
Red-top tubes: Place the specimen in a refrigerator or ice bath for 30 minutes after collection. Centrifuge the specimen as soon as possible after complete clot formation has taken place. Barrier gel separator tubes: Place the specimen in a refrigerator for 30 minutes after collection. 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. EDTA or heparin tubes: Place the specimen in a refrigerator or ice bath until the specimen can be centrifuged. Centrifuge the specimen as soon as possible and transfer the plasma to a plastic screw-capped vial. Dark/royal blue-top serum tube and dark/royal blue-top sodium heparin tubes are acceptable containers. Instruction for collecting blood in dark/royal blue-top serum tubes is similar to red-top or SS tubes or sodium heparin tubes.


Transport Temperature
Refrigerated


Specimen Stability
Room temperature: 4 days
Refrigerated: 14 days
Frozen: 6 months


Methodology
Enzymatic



The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.