Methodology
Indirect Ion-Selective Electrode
Synonyms
NA
Specimen Type
Body Fluid
Performing Lab
UCSD CALM Chemistry
Epic ID
LAB90033
Lab Test Days
Daily
Standard TAT
24 Hours from receipt of sample
Collection Information
Specimen Required
2-6 mL Body Fluid
Container Type
Sterile Container
Processing Information - Lab Use Only
Transport Temperature
Room Temp-OK/Refrigerated-OK/Frozen-OK
Specimen Stability
Room Temp: 2 Weeks; Refrigerated: 2 Weeks (preferred); Frozen: 6 Months
Rejection Criteria
Specimens collected in sodium citrate or sodium fluoride; Contaminated or hemolyzed specimens
Test Volume Required
6 mL Body Fluid
Minimum Test Volume
2 mL Body Fluid
Processing Instructions
Centrifuge and separate from cells into a transport tube. Complete a UCSD requisition and submit with specimen refrigerated. Specify source in comments, on specimen and on requisition. If requested STAT or urgent, call a RUSH TForce pickup.
Revised
6/12/25
Initials
SA