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HelpTest Code LAB3370 pH Blood Capillary
Clinical System Name
pH Blood Capillary
Synonyms
pH Blood
PH Cap
LAB3370
Sample Requirements
Specimen: Capillary Blood
Container(s): Capillary Blood Gas Tube
Preferred Vol: 2 Full Capillary Blood Gas Tubes. (EPOC capillary tubes are not acceptable)
Minimum Vol: 2 Capillary Blood Gas Tubes
Note: Draw site must be warmed for 10 minutes. Fill the tube completely with no air bubbles and mix thoroughly to dissolve and disperse the heparin. Cap it securely. Deliver to the Lab on ice.
Processing Instructions
Deliver to Core Lab on ice. Notify technologist - STAT
Reject due to: Inadequately filled specimens, air bubbles, visible clots, age of specimen
Spin: N
Aliquot: N
Temp: 0-4 C
Off-site collection: Cannot be collected outside Children's. Contact Client Services at 206-987-2617 for additional information.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
|
Heparinized Capillary Blood Gas Tube |
RT |
≤10 min |
|
Heparinized Capillary Blood Gas Tube |
0-4 C |
≤30 min |
| -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
82800
Methodology
Method: Potentiometric method by SIEMENS RAPIDPOINT 500
Analytical Volume: 1 Full Heparinized Capillary Blood Gas Tube
Reference Range
| Age | pH |
| 0 - 3 days | 7.31 - 7.47 |
| 4 days - adult | 7.35 -7.45 |
Critical Values
≤ 7.20
≥ 7.60