Blood Gases, Comprehensive
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Includes:
pH, pCO2, pO2, HCO3, Total CO2, Total Hemoglobin, Oxyhemoglobin, Carboxyhemoglobin, Methemoglobin, Oxygen Saturation, Deoxyhemoglobin, Glucose, Lactate, Sodium, Potassium, Chloride, and Ionized Calcium.
Turnaround Time:
Routine:15 Minutes
Urgent: 15 Minutes
Extreme Emergency: 15 Minutes
Test Schedule:
24 hours, 7 days a week.
Critical Values:
Reference Range and Critical Values
Test | Sample Source if applicable | Reference Range | Critical Limits |
pH | |||
0 to 2 months | Arterial | 7.30 to 7.50 | Less than or equal to 7.10 |
Over 2 months | Arterial | 7.37-7.44 | |
Venous | 7.35 to 7.45 | ||
Capillary-Neonate only | 7.30 to 7.50 | Less than or equal to 7.25 | |
Greater than or equal to 7.55 | |||
Mixed Venous | 7.32 to 7.41 | ||
pCO2 | |||
0 to 2 months | Arterial | 30 to 65 mmHg | |
Over 2 months | Arterial | 32 to 43 mmHg | |
Venous | 35 to 50 mmHg | ||
Capillary-Neonate only | 30 to 69 mmHg | Less than or equal to 20 mmHg | |
Greater than or equal to 70 mmHg | |||
Mixed Venous | 45 to 52 mmHg | ||
pO2 | |||
0 to 2 months | Arterial | 50 to 75 mmHg | |
2 months to 40 years | Arterial | 83 to 108 mmHg | |
Over 40 years | Arterial | 72 to 104 mmHg | |
Venous | 30 to 55 mmHg | ||
Capillary-Neonate only | 40 to 50 mmHg | Less than or equal to 35 mmHg | |
Mixed Venous | 35 to 40 mmHg | ||
HCO3 | Arterial | 21 to 28 mmol/L | |
Venous | 22 to 28 mmHg | ||
Mixed Venous | 24 to 28 mmol/L | ||
Total CO2 | Arterial | 22 to 28 mmol/L | |
Venous | 23 to 29 mmol/L | ||
PaO2/FIO2 Ratio | Greater than 300 mmHg | ||
Base Excess | Arterial | -2 to 2 | |
Venous | -3 to 3 | ||
O2Sat | |||
0 to 1 month | Arterial | 40 to 90% | |
1 month -150 years | Arterial | 92 to 98% | |
Oxyhemoglobin | 95 to 98% | ||
Carboxyhemoglobin | |||
Non-smokers | Less than 1.6% | Greater than 20% | |
Smokers 1 to 2 packs/day |
4 to 5% | ||
Smokers 2 or more packs/day |
8 to 9% | ||
Methemoglobin | Greater than 1.5% | ||
Deoxyhemoglobin | Arterial Only | 2.0% or less | 2 |
Sodium, Whole Blood | 134 to 143 mmol/L | Less than or equal to 120 or greater than or equal to 160 mmol/L | |
Potassium, Whole Blood | 3.4 to 5.0 mmol/L | Less than or equal to 2.5 or greater than or equal to 6.0 | |
Chloride, Whole Blood | 97 to 108 mmol/L | ||
Ionized Calcium | Measured | 1.14 to 1.32 mmol/L | Less than or equal to 0.75 or greater than or equal to 1.62 mmol/L |
Calculated (at pH of 7.4) | 1.14 to 1.28 mmol/L | ||
Glucose, Whole Blood | |||
0 to 1 day | 41 to 60 mg/dL | Less than 41 or greater than 299 mg/dL | |
1 day to 150 years | 60 to 99 mg/dL | Less than or equal to 54 and greater than 499 mg/dL | |
Lactate | 0.2 to 2.0 mmol/L | Greater than 2.0 mmol/L | |
Hemoglobin g/dL | |||
Age | Male | Female | Critical Values |
0 to 30 days | 10.0 to 18.0 | 10.0 to 18.0 | |
1 to 6 months | 9.5 to 14.0 | 9.5 to 14.0 | Less than 6.6 or greater than or equal to 20.0 g/dL |
6 months to 2 years | 10.5 to 13.5 | 10.5 to 13.5 | |
2 to 6 years | 11.5 to 13.5 | 11.5 to 13.5 | |
6 to 12 years | 11.5 to 15.5 | 11.5 to 15.5 | |
12 to 18 years | 13.0 to 16.0 | 12.0 to 16.0 | |
18 to 150 years | 13.5 to 17.5 | 12.0 to 16.0 |
Specimen Requirements:
1 mL of whole blood collected in a heparinized syringe.
Send on ice within 20 minutes.
Pediatric Specimen Requirements:
0.3 mL whole blood collected in a heparinized syringe.
Send on ice within 20 minutes.
Synonyms:
Blood Gases
Co-ox
ABG
VBG
CBG
Culture, Urine Pregnancy
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Turnaround Time:
Routine: 48 Hours
Urgent: 48 Hours
Test Schedule:
7 days a week
Specimen Requirements:
12 mL urine in a sterile container.
Stable for 2 hours at room temperature or 24 hours refrigerated.
Pediatric Specimen Requirements:
1 mL urine in a sterile container.
Stable for 2 hours at room temperature or 24 hours refrigerated.
Calcium, Ionized Post Filter
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Turnaround Time:
Routine: 30 Minutes
Urgent: 15 Minutes
Extreme Emergency: 15 Minutes
Test Schedule:
24 hours, 7 days a week.
Units:
Specimen Requirements:
1 mL blood in a heparinized syringe OR one full GREEN top (sodium or lithium heparin) tube.
Pediatric Specimen Requirements:
0.3 mL blood in a heparinized syringe OR 0.6 mL blood in a pediatric GREEN top (sodium or lithium heparin) tube.
Comments:
Stability: Whole blood up to 4 hours at room temperature.
Synonyms:
Ca
ICA
Ionized Calcium
Post filter
Fentanyl, Urine Qualitative Screen
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Turnaround Time:
Routine: 2 Hours
Urgent: 1 Hour
Test Schedule:
24/7
Interpretation:
Negative
Specimen Requirements:
6 ml fresh urine.
Reference Range:
Negative
HIT Antibody with Reflex to SRA Confirmation
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Includes:
Preliminary positives are reflexed to Serotonin Release Assay (Heparin Dependent Platelet Antibody), Unfractionated Heparin at ARUP.
Link to ARUP Test Directory (Opens in a new window) for the SRA confirmation reflex test.
Turnaround Time:
Routine: 2 Hours
Urgent: 1 Hour
Test Schedule:
Batched daily 7 days per week. Please call 503-494-5764 if STAT.
Critical Values:
Preliminary Positive, Confirmation Pending
Specimen Requirements:
One 2.7 mL Lt Blue Na Citrate tube and one 5 mL Gold SST tube.
Pediatric Specimen Requirements:
One 1.3 mL Lt Blue Na Citrate tube and two pediatric red top tubes.
Reference Range:
HIT Ab Negative
Comments:
Method: Immunoturbidimetric detection of anti-PF4/Heparin (PF4/H) antibodies.
Interferences:
The HIT Ab assay is not affected by hemoglobin up to 500 mg/dL, bilirubin up to 19 mg/dL, triglycerides up to 375 mg/dL, rheumatoid factor up to 100 IU/mL and human anti-mouse antibodies (HAMA) up to 1 microgram/mL.
No dose-response correlation between HIT results and heparin concentrations was shown in manufacturer studies; UFH (n=11) range from 0.04-1.08 IU/mL and LMWH (n=115) range from 0-2.47 IU/mL.
Testing on 40 samples from patients diagnosed with Antiphospholipid Syndrome (APS) showed no HIT Ab positive results indicating that the assay is not affected by APS antibodies.
Synonyms:
Heparin Induced Thrombocytopenia Antibody
Methotrexate
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Turnaround Time:
4 Hours
Test Schedule:
24 hours, 7 days.
Units:
Specimen Requirements:
4 mL of blood in a RED top tube. Avoid exposure to light.
Reference Range:
Therapeutic Range
Low dose: 0.5 to 1.0 micromoles/L
High dose, 24 hours: Less than or equal to 5.0 micromoles/L
High dose, 48 hours: Less than or equal to 0.5 micromoles/L
High dose, 72 hours: Less than or equal to 0.10 micromoles/L
Comments:
This assay shows cross reactivity with DAMPA (2,4-Diamino-N10-methylpteroic acid).
Specimens from patients who have received glucarpidase (carboxypeptidase G2) as a high dose methotrexate rescue therapy should not be tested with the EMIT Methotrexate assay. These specimens have increased serum levels of metabolite (DAMPA) that cross-reacts with the methotrexate antibody used in the assay.
Synonyms:
Methopterin
Mexate
MTX
Iron and TIBC (including Transferrin)
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Includes:
Transferrin
Turnaround Time:
Routine: 2 Hours
Urgent: 1 Hour
Test Schedule:
24 hours, 7 days a week.
Specimen Requirements:
4 mL blood in a GREEN top, lithium heparin tube.
Pediatric Specimen Requirements:
0.5 mL in a 1.0 mL GREEN top, lithium heparin tube.
NT-Pro BNP
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Turnaround Time:
Routine: 3 Hours
Urgent: 3 Hours
Test Schedule:
24 hours, 7 days a week.
Units:
Specimen Requirements:
4 mL blood in a GREEN top, lithium heparin tube.
Plasma samples are stable for 3 days at 2 to 8 degrees C. Samples can be stored for up to 12 months at -20 degrees C (or below).
Reference Range:
Method | EXL200A Core | Valid Checking | 5-35,000pg/mL | |||
Age | 0 up to 75 Years | Abnormality-Abnormal | >125 pg/mL | |||
Reference Range | <=125 pg/mL | |||||
Method | EXL200A Core | Valid Checking | 5-35,000pg/mL | |||
Age | 75 up to 150 Years | Abnormality-Abnormal | >=449 pg/mL | |||
Reference Range | <449 pg-mL | |||||
Method | EXL200B Core | Valid Checking | 5-35,000pg/mL | |||
Age | 0 up to 75 Years | Abnormality-Abnormal | >125 pg/mL | |||
Reference Range | <=125 pg/mL | |||||
Method | EXL200B Core | Valid Checking | 5-35,000pg/mL | |||
Age | 75 up to 150 Years | Abnormality-Abnormal | >=449 pg/mL | |||
Reference Range | <449 pg-mL | |||||
Method | STRATUS CS Core | Valid Checking | >=15 pg/mL | |||
Age | 0 up to 75 Years | Abnormality-Abnormal | >125 pg/mL | |||
Reference Range | <=125 pg/mL | |||||
Method | STRATUS CS Core | Valid Checking | >=15 pg/mL | |||
Age | 75 up to 150 Years | Abnormality-Abnormal | >=449 pg/mL | |||
Reference Range | <449 pg/mL | |||||
Method | Unspecified | Valid Checking | >=5 pg/mL | |||
Age | 0 up to 75 Years | Abnormality-Abnormal | >=125 pg/mL | |||
Reference Range | <125 pg/mL | |||||
Method | Unspecified | Valid Checking | >=5 pg/mL | |||
Age | 75 up to 150 Years | Abnormality-Abnormal | >=449 pg/mL | |||
Reference Range | <449 pg/mL | |||||
Synonyms:
BNP
BRAIN NATIURETIC PEPTIDE
B-Type Natriuretic Peptide
N Terminal proBNP
NT Pro BNP
NTB
NT-Pro B-Type Natriuretic Peptide
ProBNP
High Sensitivity Troponin-I
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Turnaround Time:
Routine: 1 Hour
Urgent: 1 Hour
Test Schedule:
24 hours, 7 days a week.
Units:
Critical Values:
Female: greater than 75 ng/L
Male: greater than 100 ng/L
Unspecified: greater than 75 ng/L
Related Links:
Specimen Requirements:
4 mL blood in a GREEN lithium or sodium heparin tube ONLY.
Pediatric Specimen Requirements:
Only Lithium Heparin GREEN top peds tube is OK. RED top peds tube is NOT ACCEPTABLE.
Comments:
All troponins outside OHSU or in the ambulatory setting will be one-time, random high sensitivity troponin draws.
For OHSU IP and ED patients, random troponins are limited to the following clinical scenarios and populations:
o Known pericarditis
o Toxic drug monitoring
o Known pulmonary embolism
o Pediatrics
o Ambulatory
Synonyms:
Troponin-I, HS Random
Troponin-I, HS Panel (0,2 Hr)
Blood Culture ID Panel PCR
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Includes:
Enterococcus faecalis
Enterococcus faecium
Listeria monocytogenes
Staphylococcus
Staphylococcus aureus
Staphylococcus epidermidis
Staphylococcus lugdunensis
Streptococcus
Streptococcus agalactiae (Group B)
Streptococcus pneumoniae
Streptococcus pyogenes (Group A)
Acinetobacter calcoaceticus-baumanii complex
Bacteroides fragilis
Enterobacterales
Enterobacter cloacae complex
Escherichia coli
Klebsiella aerogenes
Klebsiella oxytoca
Klebsiella pneumoniae group
Proteus
Salmonella
Serratia marcescens
Haemophilus influenzae
Neisseria meningitidis
Pseudomonas aeruginosa
Stenotrophomonas maltophilia
Candida albicans
Candida auris
Candida glabrata
Candida krusei
Candida parapsilosis
Candida tropicalis
Cryptococcus neoformans/gattii
CTX-M (ESBL resistance)
IMP (carbapenemase resistance)
KPC (carbapenem-resistance gene)
mcr-1 (colistin resistance)
mecA/C (methicillin-resistance gene)
mecA/C and MREJ (MRSA) resistance
NDM (carbapenemase resistance)
OXA-48-like (carbapenemase resistance)
van A/B (vancomycin-resistance gene)
VIM (carbapenemase resistance)
Turnaround Time:
Routine: 2 Hours
Urgent: 2 Hours
Specimen Requirements:
Blood culture vials
Synonyms:
BCID
Blood Culture Pathogen Panel PCR