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Urinalysis (UA) with Reflex Microscopic (aka Urine Macroscopic with Reflex Microscopic, if Indicated)

Performing Lab(s)

Memorial-Belleville & Memorial-Shiloh

Methodology

If there are abnormal dipstick findings (protein ≥+1, any blood, nitrite, or leukocyte esterase), then #3117 Urine Microscopic will be performed at an additional charge.

Specimen Requirement (s)

Specimen Type: Urine, random

Container/Tube: Yellow/Red-top UA preservative tube

Specimen Volume: Full tube

Specimen Minimum Volume: 10 mL 

Collection Instructions:

  1. Collect a midstream voided specimen following directions printed on outer wrapping of Urine Complete Kit.
  2. Using cannula in collection cup lid, fill yellow/red preservative tube.

Additional Information:

  1. Label tube according to labeling procedure.
  2. A catheterized specimen is acceptable.
  3. Provide collection date and time, and method of collection.
  4. If storage and transport is >1 hour, refrigerate specimen.
  5. Specimen should be received in the laboratory within 1 hour of collection.

Day(s)/Shift(s) Test Set Up and Turnaround Time

Sunday through Saturday

Hours: 24 hours

 

Turnaround Time: 

STAT: 45 minutes

Routine: less than 4 hours from receipt

Transport and Stability

Transport temperature: Ambient to lab

Reference Values

  • Specific gravity: 1.003-1.030
  • pH: "Urine pH is affected by diet, medications, systemic acid-base disturbances, and renal tubular function. pH may affect urinary stone formation. For example, urine pH below 6.0 may help reduce the tendency for calcium phosphate stones and pH greater than 6.0 may reduce the tendency for uric acid stone formation.

 Information obtained from Mayo Medical Laboratories test catalog 2/20/18."

  • Protein: negative
  • Glucose: negative
  • Ketones: negative
  • Bilirubin: negative
  • Blood: negative
  • Urobilinogen: <2.0 mg/dL
  • Nitrites: negative
  • Leukocyte esterase: negative

Literature References:

1. Henry JB, et al. Clinical diagnosis and management by laboratory methods. 20th ed. Philadelphia, PA: Saunders, 2001:1432-34.
2. Brunzel NA. Fundamentals of urine and body fluid analysis. 2nd ed. Philadelphia, PA: Saunders, 2004:419.

CPT/LOINC Codes

81003

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