Specimen must arrive within 2 hours of draw.
Submit only 1 of the following specimens:
Plasma
Container/Tube: Light Green-top (lithium heparin) tube
Specimen Volume: 3 mL
Transport Temperature: Ambient
Collections Instructions: Spin down immediately. If there is a delay in transport of ≥2 hours, send specimen refrigerated.
Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).
Serum
Container/Tube: Serum gel (SST) tube
Specimen Volume: 3.5 mL or 5 mL
Transport Temperature: Ambient
Collections Instructions: Allow specimen to clot for 30 minutes. Spin specimen in centrifuge. If there is a delay in transport of ≥2 hours, send specimen refrigerated.
Note: 1. Indicate serum.
2. Label specimen appropriately (serum).
Potentiometric, Ion-Selective Electrode (ISE)
137-145 mmol/L
Critical values (automatic call-back): <120 mmol/L or >160 mmol/L
Monday through Sunday
Available STAT
84295