Selenium, Random Urine with Creatinine

Test Code

16867

CPT Codes
82570, 84255

Includes

Creatinine

Preferred Specimen

2 mL of a random urine, collected in an acid-washed plastic leak-proof container

Minimum Volume

1 mL

Instructions

Collect urine in an acid-washed, plastic, leak-proof container. Acidify with Hydrochloric or Nitric Acid (1 mL of concentrated acid for each 100 mL of urine). Avoid worksite collection.

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 5 days
Refrigerated: 14 days
Frozen: 30 days

Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

Setup Schedule

Set up: Tues, Fri; Report available: 3 days

Reference Range

Selenium, Urine	<160 mcg/L
Creatinine, Random Urine
≤6 Months	2-28 mg/dL
7- 11 Months	2-31 mg/dL
1-2 Years	2-110 mg/dL
3-8 Years	2-130 mg/dL
9-12 Years	2-160 mg/dL
>12 Years Male	20-320 mg/dL
>12 Years Female	20-275 mg/dL
Selenium/Creatinine Ratio	<140.0 mcg/g creat

Clinical Significance

Selenium is considered an essential trace element. It enters the food chain through plants. Selenium plays an important role in the control of thyroid hormone metabolism. Selenium deficiency may cause reduced growth rates, owing to a feedback response, which lowers tri-iodothyronine-mediated synthesis of growth hormone in the pituitary, while a combined deficiency of selenium and iodine exacerbates hypothyroidism. Selenium is important for proper reproductive performance.

Performing Laboratory
Quest Diagnostics Nichols Institute Valencia
27027 Tourney Road
Valencia, CA 91355-5386

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.