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Double antibody radioimmunoassay (RIA)
0.4 mL (Note: This volume does not allow for repeat testing.)
Serum must be separated from cells within 45 minutes of venipuncture. Send serum in a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Freeze. Stable at room temperature or refrigerated for one day. Stable for 200 days frozen.