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Epic Test Code LAB403 Ketones: Urine Reagent Strip

Performing Location(s)

BMC,CRH,LFH,HRK,OCH,FTT,FOX

Specimen Type

Random Urine

Preferred Container

Random Urine Tube

Alternate Container

Sterile Container

Minimum Volume to Submit for Testing

5 mL Urine

Transportation Needs

Deliver specimen to the laboratory within 1 hour of collection. If not possible see “Storage Requirements”

Storage Requirements

Refrigerate up to 24 hours. DO NOT USE CHEMICAL PRESERVATIVES

Causes for Rejection

Mislabeled or unlabeled specimen
>24 hrs old Refrigerated
> 2hrs Room Temperature

Limitations

This methodology does not react with acetone or B-hydroxybutyric acid. False positive results (trace or less) may occur with highly pigmented urine specimens or those containing large amounts of levodopa metabolites. Compounds that contain sulfhydryl groups (e.g. 2-mercaptoethane sulfonic acid) may cause false positive results or an atypical color reaction.

Reference Values

Population Units Reference Range
All Populations None Negative

Critical Value: 
   Ketone above 40 mg/dl (Pediatric [<18 yrs] or Obstetrics
   patient only).

 

Days of Analysis

All

Available STAT

Yes

Includes

Chemical test for the presence of acetoacetic acid in urine

Methodology

Urine dipstick, acetoacetic acid/ nitroprusside reaction

CPT Code

81003

Last Updated

22-July-19