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Test Name

Urea Clearance

CPT Code(s)

84545

Includes

Urea Nitrogen (BUN); Urea Nitrogen, Urine; Urea Clearance (calculation)

Methodology

Spectrophotometry (SP)

Reference Range(s)

Urea Nitrogen (BUN)

  Male (mg/dL) Female (mg/dL)
<1 Month 4-12 3-17
1-11 Months 2-13 4-14
1-3 Years 3-12 3-14
4-19 Years 7-20 7-20
≥20 Years 7-25 7-25

Urea Nitrogen, 24 Hour Urine 6-17 g/24 h
Urea Nitrogen Clearance 41-68 mL/min

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided 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 payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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Urea Clearance
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