Test Code SEWB Selenium, Blood
Advisory Information
This test can be used to assess tissue stores of selenium. For routine assessment of selenium deficiency or toxicity, the preferred test is selenium urine.
For assessment of recent intake, order SES / Selenium, Serum.
Specimen Required
Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.
Supplies: Metal Free B-D Tube (EDTA), 6 mL (T183)
Container/Tube: Royal blue-top (EDTA)
Specimen Volume: 0.8 mL
Collection Instructions:
1. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.
2. Send specimen in original tube.
Secondary ID
65600Useful For
Assessment of tissue stores of selenium
Special Instructions
Method Name
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)
Reporting Name
Selenium, BSpecimen Type
Whole bloodSpecimen Minimum Volume
0.3 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Whole blood | Refrigerated (preferred) | 28 days | |
Ambient | 28 days | ||
Frozen | 28 days |
Reject Due To
Gross hemolysis | OK |
Gross lipemia | OK |
Gross icterus | OK |
Microtainer | Reject |
Reference Values
0-17 years: not established
≥18 years: 150-241 ng/mL
Day(s) and Time(s) Performed
Monday, 8 a.m.
Performing Laboratory

Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
84255
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
SEWB | Selenium, B | 5722-4 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
65600 | Selenium, B | 5722-4 |