The ISI plasma 5-HIAA assay correlates well with the 24-hour urinary 5-HIAA assays. This test has been clinically validated for NETS patients who previously relied on the 24-hour urinary 5-HIAA. The plasma 5-HIAA saves time, alleviates the need to collect urine in a container for 24 hours, and provides equivalent clinical information.
Up to 22 ng/mL
5-HIAA plasma is measured by GC-MS/MS.
Patient should fast overnight prior to collection of specimen.
Collect 10mL blood directly into ISI’s Z-tubeTM Preservative and separate as soon as possible. Freeze plasma immediately after separation. Special Z-tubeTM Preservatives are available from ISI. Minimum specimen size is 1mL. Note: one Z-tubeTM may be shared for up to three tests. After centrifuging tube, aliqout 1mL per test in separate vials, mark with name of test and freeze.
Specimens for this assay must be collected using ISI’s Z-tubeTM. Specimens must be shipped frozen; specimens are not stable refrigerated or ambient. No substitute preservatives are acceptable.
*Frozen Z-tubeTM plasma is the only acceptable sample type for this assay.
Ship specimens frozen in dry ice.
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