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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, Dark Green/Sodium Heparin

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: EDTA

Spin: N

Aliquot: N

Temp: 2 - 4 C

Storage location: Minimize exposure to air. Give promptly to send-outs. If send-outs is unavailable, follow the stat send-outs procedure by batching the test in Mayo Access. Send the sample STAT on a cold pack to HMC via Delivery Express.


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

Harborview Medical Center

Harborview Medical Center Stat Lab

325 9th Ave, Box 359743

Ground West Hospital, Room 47
Seattle, WA 98104


Phone Number: (206) 520-4600

For STAT Inquiries, refer to Phone Number: (206) 744-3451


Department:  Send Outs


Phone Number: (206) 987-2563

Reference Range

<5 mEq/L



Method: Spectrophotometric

Analytical Volume: None specified


CPT Codes



Send Out Instructions


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



Send STAT to HMC on an ice pack, via Delivery Express.