Plasma

Call laboratory for additional acceptable specimen collection containers.

6 mL whole blood in pink top tube

Grossly hemolyzed or lipemic specimens

24 hrs/day, 7 days a week, including holidays.

1 hour (upon receipt in laboratory)

15-65 pg/mL

This assay may be significantly impacted by high-dose biotin (>5 mg dose) taken within previous 12 hours. High concentrations of biotin may lead to falsely decreased results. These concentrations may be found in patients taking over-the-counter supplements with biotin content much higher than nutritional requirements for biotin. Specimens should not be collected until at least 12 hours after the last dose.

This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).

Hemolysis: No significant interference up to an H index of 250 (approximate hemoglobin concentration: 250 mg/dL).

Lipemia: No significant interference up to an L index of 1500 (approximate triglycerides concentration: 3000 mg/dL). Note there is poor correlation between turbidity and triglyceride concentration.

Icterus: No significant interference up to an I index of 65 (approximate conjugated and unconjugated bilirubin concentration: 65 mg/dL).

Electrochemiluminescence Immunoassay

83970

See Additional Information:
Biotin Interference with Immunoassays