Ordering Recommendation

Urine is the preferred specimen type for the assessment of selenium toxicity and deficiency. For the assessment of recent intake, Selenium, Serum or Plasma is available (0025023).

Mnemonic
SE-U
Methodology

Quantitative Inductively Coupled Plasma-Mass Spectrometry

Performed

Sun-Sat

Reported

1-5 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications (upon the advice of their physician). High concentrations of iodine may interfere with elemental testing. Abstinence from iodine-containing medications or contrast agents for at least 1 month prior to collecting specimens for elemental testing is recommended.

Collect

24-hour or random urine collection. Specimen must be collected in a plastic container. ARUP studies indicate that refrigeration of urine alone, during and after collection, preserves specimens adequately, if tested within 14 days of collection.

Specimen Preparation

Transfer an 8 mL aliquot from a well-mixed collection to ARUP Trace Element-Free Transport Tubes (ARUP supply #43116). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1 mL)

Storage/Transport Temperature

Refrigerated. Also acceptable: Room temperature or frozen.

Unacceptable Conditions

Urine collected within 48 hours after administration of a gadolinium (Gd) containing contrast media (may occur with MRI studies). Acid preserved urine. Specimens contaminated with blood or fecal material. Specimens transported in non-trace element free transport tube (with the exception of the original device).

Remarks

Record total volume and collection time interval on transport tube and on test request form.

Stability

Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 1 year

Reference Interval
Test Number
Components
Reference Interval
  Selenium, Urine - per volume 12.0-40.0 µg/L
  Selenium, Urine - per 24h 12.0-52.6 µg/d
  Selenium, Urine - ratio to CRT 10.0-35.0 µg/g CRT
  Creatinine, Urine - per 24h
Age Male Female
3-8 years 140-700 mg/d 140-700 mg/d
9-12 years 300-1300 mg/d 300-1300 mg/d
13-17 years 500-2300 mg/d 400-1600 mg/d
18-50 years 1000-2500 mg/d 700-1600 mg/d
51-80 years 800-2100 mg/d 500-1400 mg/d
81 years and older 600-2000 mg/d 400-1300 mg/d

Interpretive Data

Urine selenium levels can be used to assess nutritional status and monitor excretion. Selenium deficiency can occur endemically or as a result of sustained TPN or restricted diets and has been associated with cardiomyopathy and may exacerbate hypothyroidism. Selenium toxicity is relatively rare. Excess intake of selenium can result in symptoms consistent with selenosis and include gastrointestinal upset, hair loss, white blotchy nails, and mild nerve damage.

Compliance Category

Laboratory Developed Test (LDT)

Note
Hotline History
N/A
CPT Codes

84255

Components
Component Test Code* Component Chart Name LOINC
0020207 Creatinine, Urine - per volume 2161-8
0020208 Creatinine, Urine - per 24h 2162-6
0025066 Selenium, Urine - ratio to CRT 29917-2
0025100 Selenium, Urine - per 24h 5727-3
0097110 Total Volume 19153-6
0097111 Hours Collected 30211-7
0099365 Selenium, Urine - per volume 5726-5
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Se
  • Selenium/Creatinine, Random, Urine
  • SEU
  • Urine selenium concentration
Selenium, Urine