NPHL has moved to an electronic ordering system, NUlirt, and it is now the preferred method to order all tests. Once ordered, print a "batch list" (see
NUlirt Guide).
Forms Required - NUlirt batch list of NPHL Test Request Form (completed in its entirety) must accompany the specimen to include the following information: symptoms and date of onset, pregnancy status, travel and vaccine history. Testing
will not be performed without all required information.
Please call NPHL Client Services at 402-559-2440 or toll free at 800-334-0459 for further clarification.
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| Test: |
Selenium, Serum
- No pre-approval needed
- NUlirt Order: SELB
|
| Method: |
ICP-MS |
| Availability: |
- Thursday
- If received by 9:00 AM, reported within 24 hours
|
| Specimen: |
Serum |
| Collection Device: |
- Royal Blue Tube (No additive)
- Draw blood using metal free materials, syringe, test tube, and stopper
- Allow blood to clot for 30-40 minutes but no longer than 60 minutes
- Centrifuge for 10 minutes at 2400 rpm
- Pour the serum into polyethylene tubes or metal free tubes
- Alternative:
- Red Top (acceptable due to nationwide shortage)
- Centrifuge and separate from cells ASAP or within 2 hours of collection
- Transfer 2 mL serum or plasma to a metal free aliquot tube (RPS clients: TUBE107 on supply portal)
|
| Volume: |
- Optimum: 0.5 mL Serum
- Minimum: 0.2 mL Serum.
|
| Unacceptable: |
Patients that have recently had a procedure that has involved barium intake |
| Specimen Stability: |
- Ambient air (15°-25° C) up to 28 days
- Refrigerated (2°-8° C) up to 28 days
- Frozen (-20° C) up to 3 months
|
| Reference Interval: |
23-190 µg/dL |
| Revised: |
10/24/2025 |
If you have questions about proper specimen collection, please call
NPHL Client Services at 402-559-2440 or toll free at 800-334-0459.
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