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HelpTest Code =Lytes =Lytes
Clinical System Name
Electrolytes, Syringe
Sample Requirements
Specimen: Whole Blood
Container(s): Heparinized Syringe, 2 Capillary Blood Gas Tubes
Preferred Vol: 1.0 mL Heparinized Syringe or 2 Full Capillary Blood Gas Tubes
Minimum Vol: 2 Heparinized Capillary Blood Gas Tubes (EPOC capillary tubes are only acceptable at Bellevue, South, or North clinics ).
Notes: Sample can be shared with a CBG if 2 capillary tubes are collected.
Processing Instructions
Reject due to: Inadequately filled specimens, air bubbles, visible clots, age of specimen
Spin: N
Aliquot: N
Temp: 0-4 C
Storage location: Core Lab Fridge
Off-site collection: Samples collected outside Children's must be drawn in a heparin syringe and sent at 0-4 C within 4 hours.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
|
Heparinized Syringe, Heparinized Capillary Blood Gas Tube |
RT |
≤ 30 min ≤ 10 min at Bellevue, South, North |
|
Heparinized Syringe, Heparinized Capillary Blood Gas Tube |
0-4 C |
≤ 4 h |
| -20 C or -70 C |
N |
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 15 min |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Chemistry
Phone Number: 206-987-2617 (Client Services)
CPT Codes
80051
Methodology
Method: Potentiometric method by SIEMENS RAPIDPOINT 500 Analyzer
Analytical Volume:
|
0-2 Y |
1 Heparinized Capillary Blood Gas Tube |
|
> 2 Y |
0.5 mL Heparinized Syringe |
Reference Range
|
Reference Ranges |
||
|
Analyte (unit) |
Age |
Whole Blood |
|
Sodium (mmol/L)
|
0 - 1 w 1 w - adult |
132 - 142 135 - 145 |
|
Potassium (mmol/L) |
0 - 2 d 2 d - 3 m 3 m - adult |
3.7 - 5.9 3.4 - 5.6 3.5 - 5.5 |
|
Chloride (mmol/L) |
0 - 1 y 1 y - adult |
96 - 110 96 - 109 |
|
CO2 total calculated (mEq/L) |
All ages |
18 - 27 |
Description
Rapid analysis of sodium, potassium, chloride, and carbon dioxide.
Critical Values
|
Critical Values |
|||||
| Analyte (unit) |
Age |
Low |
High |
||
|
Sodium (mmol/L) |
All |
≤ 124 |
≥ 160 |
||
|
Potassium (mmol/L) |
0 -2 day 2 day – adult |
≤ 3.0 ≤ 3.0 |
≥ 6.5 ≥ 6.0 |
||
|
Chloride (mmol/L) |
Child – adult |
≤ 70 |
≥ 130 |
||
|
CO2 total calculated (mEq/L) |
All Ages |
≤ 10 |
≥ 40 |
||