Specimen Requirements

For situations where chain-of-custody is required, a complete chain-of-custody protocol must be maintained when collecting and handling specimens.

Container/Tube:

Preferred: Random urine specimen

Specimen Volume: A minimum volume of 2.9 µL plus a dead volume is required for testing

Stability: Samples should be within the normal physiological pH range of 5-8. No additives or preservatives are required. It is recommended that urine specimens be stored at 2 8 °C and tested within 5 days of collection. Centrifuge highly turbid specimens before testing. Adulteration or dilution of the sample can cause erroneous results. If adulteration is suspected, another sample should be collected.

Note: 1. A completed Chain-of-Custody Form is required when processing a chain-of-custody specimen.

          2. Presence of detergents or bleach in specimen may interfere with assay.