Angiotensin II

18 days

Radioimmunoassay (RIA)

Causes for Rejection
Sample not collected with Trasylol®; sample not submitted in tube with Trasylol label, gross hemolysis; recently administered radioisotopes; specimen not received frozen; serum, sodium citrate, or heparinized plasma specimen; lipemia

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Measures angiotensin II, a potent vasoconstrictor. Useful in evaluating hypertension or aldosterone regulation.

Plasma

3 mL

Lavender-top (EDTA) tube with Trasylol®

Patient must not have received radioactive substances 24 hours prior to test. Patient should be fasting.

Trasylol® kits may be ordered through the PeopleSoft system (LabCorp N° 33328). Using a chilled 6-mL lavender-top (EDTA) tube taken from the kit, collect a whole blood specimen. Mix the specimen several times by inverting the EDTA collection tube. After removing the cap from the EDTA draw tube, take one of the sterile, Beral pipettes (from under the gray foam), and add 0.25 mL Trasylol® to the EDTA tube. Recap the EDTA tube and invert several times to mix well. Centrifuge the EDTA tube to separate the plasma from the cells, and immediately transfer the plasma into one of the brown screw-cap transfer tubes provided in the kit. There should be a "Trasylol® Added" label affixed to the brown transport tubes. Cap and freeze the labeled transport tube containing the EDTA plasma with Trasylol® added. To avoid delays in turnaround time when requesting multiple test on frozen samples, please submit separate frozen specimens for each test requested.