One 6 mL whole blood collected in royal blue (K2EDTA) top tube. Also acceptable: royal blue (Na2EDTA) top tube.

4 mL whole blood ambient (Min: 2 mL).

Patient Preparation: Avoid seafood consumption for 48 hours prior to sample collection.

* Collection Instructions *

• Carefully clean skin prior to venipuncture.
• Avoid worksite collection.

Note: Tests performed on a specimen submitted in a non-trace element tube/container (non-acid washed) may not accurately reflect the patient's level. If a non-trace element tube/container is received, it will be accepted for testing. However, elevated results shall be reported with a message that re-submission with a trace element tube/container is recommended.

Ambient: 10 days

Refrigerated: 10 days

Frozen: Unacceptable

Clotted specimens