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HelpTest Code PDXGAS POC Pediatric Blood Gas Mixed Venous (GEM 5000)
Specimen and Container/Tube
Specimen Type: Whole Blood
Preferred Specimen: Mixed Venous Whole Blood, heparinized or non-heparinized syringe
Other Acceptable specimens: N/A
Specimen Stability
|
Storage Temperature |
Stability |
|
Room temperature |
5 minutes
|
|
Refrigerated |
Not Acceptable |
|
Frozen |
Not Acceptable |
Collection Instructions
- Collect specimen per standard collection procedure.
- Remove all air from syringe.
- Sample must be well mixed and free of clots.
Note: Prior to testing, invert syringe at least twice and roll between outstretched palms at least 5 times.
Specimen Handling and Transport Instructions
UCMC Onsite Instructions:
- Collect whole blood specimen indicating the collection site.
- Testing should be performed immediately after collection.
UCMC Offsite and UC MedLab Outreach Instructions:
N/A
Rejection Criteria
- Insufficient volume.
- Outside stability limits.
- Specimen with air bubbles.
Reference Values
| Peds | |||
| Analytes | Measured or Calculated? | MCOOX (Mixed Venous sample Reference Range) | Units |
| pH | Measured | 7.33 - 7.43 | NA |
| pCO2 | Measured | 41 - 51 | mmHg |
| pO2 | Measured | 35 - 50 | mmHg |
| Sodium (Na+) | Measured | 134 - 149 | mmol/L |
| potassium (K+) | Measured | 3.5 - 5.0 | mmol/L |
| Chloride (Cl-) | Measured | 95 - 108 | mmol/L |
| Calcium (Ca++) | Measured | 1.15 - 1.35 | mmol/L |
| Glucose | Measured | 60 - 139 | mg/dL |
| Lactate | Measured | 0.7 - 2.1 | mmol/L |
| tHb | Measured | 12.0 - 18.0 | g/dL |
| O2Hb | Calculated | 67.0 - 75.0 | % |
| COHb | Calculated | <3.0 | % |
| MetHb | Calculated | <2.0 | % |
| SO2 | Measured | 70 - 76 | % |
| TCO2 | Calculated | N/A | mmol/L |
| Base Excess | Calculated | -3 to +3 | mmol/L |
| cSO2 | Calculated | N/A | % |
| HCO3 | Calculated | 22 - 29 | mmol/L |
Turnaround Time
STAT Turnaround Time: N/A
Routine Turnaround Time: N/A
Testing Schedule: 24/7
Clinical Indications
Diagnosis of acid/base disorders
Methodology
Potentiometry: pH, pCO2
Amperometry: pO2
Derived: HCO3-, base excess
Optical (CO-oximetry): SO2, hemoglobin, oxyhemoglobin, deoxyhemoglobin, carboxyhemoglobin, methemoglobin
CPT Codes
82805, 84295, 84132, 82435, 82330, 82947,83605, 83050, 82375
LOINC Codes
2705-2, 2716-9, 30350-3, 2032-1, 2617-9, 2711-0, 39791-9, 39789-3, 41649-5, 42857-3, 41652-9, 2519-7, 2711-0, 2027-1, 1927-9, 51731-8, 14627-4
Synonyms/Keyword Search
Peds Mixed Venous Blood Gas
POC Mixed Venous Blood Gas Pediatric
Last Review Date
3/12/26
Volume
Preferred Volume: 0.5 mL
Minimum Volume: 0.2 mL
Critical Values
| Analyte | Age Range | Low | High | Unit |
| pH | Any age | <7.20 | >7.60 | NA |
| pCO2 | Any age | <20 | >70 | mmHg |
| Glucose | Any age | <40 | >500 | mg/dL |
| Sodium (Na+) | Any age | <120 | >160 | mmol/L |
| Potassium (K+) | Any age | <2.8 | ≥6.0 | mmol/L |
| tHb (total Hemoglobin) | Any age | <6 | N/A | g/dL |
| COHb (Carboxyhemoglobin) | Any age | N/A | >20 | % |
| MetHb (Methemoglobin) | Any age | N/A | >10 | % |
Test Components
pH, pCO2, pO2, Sodium, Potassium, Chloride, Calcium, Glucose, Lactate, Hemoglobin, Oxyhemoglobin, Carboxyhemoglobin, Methemoglobin, SO2, TCO2, Base Excess, cSO2, HCO3
Additional Information
The GEM Premier5000 analyzer is a portable critical care system to rapidly analyze heparinized and non-heparinized whole blood samples to assure expedient and accurate results during the diagnostic blood sampling portion of a cardiac catheterization.