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Test Code UAMRX Urinalysis, reflex to Urine Culture

Important Note

Both  Red/Yellow Tube (UA-preservative) AND Gray top (Urine C&S preservative) tubes are required for testing.

Additional Codes

Epic: LAB9113

Testing Algorithm

If Urine WBC is >10, then urine culture will be performed at an additional charge.

Specimen Required

Specimen Type: Preserved Urine

Submission Container/Tube: Red/Yellow Tube (UA-preservative) AND Gray top (Urine C&S preservative)

Specimen Volume: 8 mL UA-preserved AND 4 mL C&S-preserved

Collection Instructions: 

  1. Preferred specimen is a mid-stream, clean catch sample.

Additional Information:

  1. If a gray top (C&S preservative) tube is not received, testing will be cancelled and UA only will be ordered.
  2. If a red/yellow top (UA preservative) tube is not received, testing will be cancelled and CXURN only will be ordered.


Specimen Type: Unpreserved Urine

Submission Container/Tube: Sterile container

Specimen Volume: 10 mL

Specimen Minimum Volume

1.5 mL

Specimen Stability

Preserved Urine

Room temperature: 72 hours

Refrigerated: 72 hours



Unpreserved Urine

Room temperature: 2 hours

Refrigerated: 24 hours


Reference Range

See laboratory report.

Rejection Due To

Mislabeled and unlabeled specimens, delay in being sent to the laboratory/prolonged exposure at room temperature, contamination with feces, and QNS (quantity not sufficient) status.

Report Available


1 day


Urine Culture

>2 days


Urine Color


Urine Specific Gravity

Urine pH

Urine Leukocyte Esterase

Urine Nitrates

Urine Protein

Urine Glucose

Urine Ketones

Urine Urobilinogen

Urine Bilirubin

Day(s) Performed