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Test Code HCO3 U Urine Bicarbonate

Clinical System Name

Urine Bicarbonate


Bicarbonate (HCO3) Urine
HCO3, Urine
Urine Bicarbonate
Urine HCO3


Sample Requirements

Specimen: Urine

Container(s): Syringe, Red

Preferred Vol: See note

Minimum Vol:  0.2 mL

Note: Specimen requirements: 1 - 10 mL random urine collected anaerobically in a syringe. Seal syringe and place on ice. Do not expose sample to air. Send to the lab immediately. Refer to Clinical Policy/Procedures for "Urine Specimen from an Indwelling Catheter" for specimen collection information.  Urine collected in a cup may also be transfered to a Red Top Tube.

Processing Instructions

Reject due to:

Spin: N

Aliquot: N

Temp: 2 - 4 C

Storage location: Minimize exposure to air.Give promptly to send outs. If send outs unavailable send directly to UW on a cold pack via Delivery Express and keep a copy of UW requisition for send outs.


Off-site collection: Minimize exposure to air.Send  promptly to send outs. Ship refrigerated.


Specimen Type Temperature Time
  Room temp

1 hr





STAT Performed TAT
Y Daily 5 h


Performing Laboratory

University of Washington

Dept of Laboratory Medicine

Harborview Medical Center Stat Laboratory

1959 NE Pacific St, NW220
Seattle, WA 98195

Phone Number: (206) 520-4600


Department:  Send Outs


Phone Number: (206) 987-2563

Reference Range


<5 mEq/L



Method: ISE

Analytical Volume: None specified


CPT Codes



Send Out Instructions


Reference Test Name: Carbon Dioxide, Fluid
Reference Test Number:



Refer to STAT Specimen Sendouts Procedure.