Test Code LAB1983 Urine Leukocyte Esterase
Clinical System Name
Urine Leukocyte Esterase
Synonyms
LEUK EST U
LAB1983
Sample Requirements
Specimen: Urine
Container(s): Sterile, screw-capped container preferred. Clean container also acceptable.
Preferred Vol: 1.0 mL
Minimum Vol: 0.5 mL
Notes: Specimen must be received in the Lab within two hours. If there will be a delay, keep the specimen refrigerated and transport on ice. Do not use cotton balls or gauze to collect specimen. Do not squeeze urine from diapers.
For bagged urines: Aspirate urine sample from bag using a sterile needleless syringe and place in sterile specimen cup before sending to the lab.
For non-sterile containers: Urines collected in non-sterile containers will not be sent for culture. They will have the following comment appended: “Urine collected into a non-sterile container. Results may be affected due to unknown interferents, and sample is unsuitable for culture. For future collections please collect urine into a sterile specimen cup.”
UA testing can not be performed off 24 hour urine collections.
Acceptable collection methods: bagged, bladder tap, bladder wash,
clean catch, cystoscopy, direct catheter, foley catheter, lleal
loop, indwelling catheter, kidney, midstream void, nephrostomy,
suprapubic aspirate, ureter.
Processing Instructions
Reject due to: Insufficient quantity, incorrect storage temperature, age of specimen, gross contamination, specimens collected with cotton balls or gauze, specimens obtained from diapers, specimens sent in any preservative solution.
Spin: N
Aliquot: N
Storage location: Core 5 Refrigerator
Off-site collection: Deliver specimen to the Lab within two hours of collection or keep refrigerated at 2-8oC.
Stability
Specimen Type | Temperature | Time |
---|---|---|
Urine | RT |
≤ 2 h |
Urine | 2-8 C |
≤ 7 d |
-20 C or -70 C |
N |
Availability
STAT | Performed | TAT |
---|---|---|
Y | 24/7 | 1 h |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Chemistry
Phone Number: 206-987-2617 (Client Services)
CPT Codes
81003
Methodology
Method: Clinitek Advantus Urine Analyzer with Seimens Reagent strips
Analytical Volume: 0.5 mL
Reference Range
Negative