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Urinalysis with Reflex to Microscopic

Test Code


CPT Code(s)



A microscopic examination is performed, when appropriate, at an additional charge (CPT code(s): 81015).

Preferred Specimen(s)

10 mL urine - Urinalysis transport tube (yellow-top, blue fill line, preservative tube)

Minimum Volume

Preserved: 1 mL
Unpreserved (pediatric only): 1 mL

Alternative Specimen(s)

Refrigerated unpreserved pediatric sample

Collection Instructions

Encourage mid stream samples to minimize contamination and improve accuracy. Label the sample appropriately and store at room temperature until pick-up.

Note: The yellow-top, blue line tube cannot be used for collection and transport of specimens for urine culture.
**This test code does not include reflex to culture**
If reflex to culture is desired, please order "Urinalysis, Complete, with Reflex to Culture" (test code 3020).
If culture is being ordered separately, submit separate specimen (4 mL gray-top tube).

Transport Container

Yellow-top, blue fill line urinalysis transport tube

Transport Temperature

Preserved: Room temperature
Pediatric Unpreserved: Refrigerated (cold packs)

Specimen Stability

Room temperature: 72 hours preserved specimen
Refrigerated: 24 hours unpreserved pediatric specimen

Reject Criteria

Unpreserved specimen (adults) • Yellow/red swirl-topped conical transport tube with preservative


Reagent Impregnated Strips/Tablets/Microscopic Examination if urine macroscopic or dipstick indicates

Performing Laboratory

Quest Diagnostics-Seattle
1737 Airport Way S Suite 200
Seattle, WA 98134-1636

Setup Schedule

Set up: Daily; Report available: 1 day

Reference Range(s)

See Medical Report

Clinical Significance

Dipstick urinalysis measures chemical constituents of urine. Microscopic examination helps to detect the presence of cells, bacteria, yeast and other formed elements. 

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result NameLOINC CodeComponent Name
30006000SPECIFIC GRAVITY5811-5Specific gravity
30006100OCCULT BLOOD5794-3Hemoglobin
30006500LEUKOCYTE ESTERASE5799-2Leukocyte esterase
30006900SQUAMOUS EPITHELIAL CELLS11277-1Epithelial cells.squamous
30006910TRANSITIONAL EPITHELIAL CELLS30089-7Transitional cells
30007000RENAL EPITHELIAL CELLS26052-1Epithelial cells.renal
30007300AMORPHOUS SEDIMENT8246-1Amorphous sediment
30009300COMMENTS8251-1Service comment
30010000CALCIUM OXALATE CRYSTALS25148-8Calcium oxalate crystals
30010100TRIPLE PHOSPHATE CRYSTALS46137-6Triple phosphate crystals
30010200URIC ACID CRYSTALS46138-4Urate crystals
30010400HYALINE CAST5796-8Hyaline casts
30010500GRANULAR CAST5793-5Granular casts
30019500BILIRUBIN ICTOTEST5770-3Bilirubin
30071900REDUCING SUBSTANCES20626-8Reducing substances

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.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* 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.