Catecholamines LC-MS/MS, Plasma

Specimen Type

Volume

Sample Volume

5.0 mL<br>split into two equal aliquots

Minimum Volume

2.0 mL<br>split into two equal aliquots

Patient Preparation

Patient must refrain from eating, using tobacco and drinking caffeinated beverages for at least 4 hours before the specimen is drawn. Patient must be in supine position for at least 30 minutes prior to specimen collection.

Collection & Handling

Collection Instructions

Patient must be in supine position for at least 30 minutes prior to specimen collection. Place tube on ice immediately after collection.

Handling Information

Specimen should be kept cold and spun in a cold centrifuge as soon as possible, within 60 minutes. Split plasma into two equal aliquots and freeze immediately. Store and send frozen.

Stability

If the specimen thaws, it is unsuitable for analysis. Stable for 6 months at -70°C

Rejection Criteria