CHEMISTRY

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Anion Gap

Any age

>30

mmol/L

Calcium

Any age

<6.5
>13

mg/dL

Calcium, Free (ionized)

Any age

<0.8
>1.6

mmol/L

Chloride

Any age

<80
>120

mmol/L

CO2

Any age

<10
>40

mmol/L

CO Hemoglobin

Any age

>20

%

Glucose

0-2 days

<35

mg/dL

>2 days &
<1 year

<40

>1 year

<55

<30 days

>200

>30 days &
<17 yrs

>300

>17 yrs

>450

Magnesium

Any age

<1.0
>3.5

mg/dL

O2 Content

Any age

<10

ml/dl

pCO2

Any age

>65

mmHg

pH

Any age

<7.2
>7.6

pH units

Phosphorus

<3 years

≤2.5

mg/dL

3-12 years

≤2.0

>12 years

≤1.5

pO2

Any age

<50

mmHg

Potassium

<1 week

<2.5

mmol/L

>1 week

<3.0

Any age

>6.0

Sodium

Any age

<125

mmol/L

>160

Total Bilirubin

<1 day

≥8

mg/dL

>1 day
<2 days

≥13

>2 days &
<30 days

≥15

≥0.3

ng/mL

COAGULATION

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Fibrinogen

Any age

<100

mg/dL

PTT

Any age

≥100

sec

PT INR

Any age

>5.0 INR

HEMATOLOGY

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Absolute Neutrophil Count

Any age

≤0.5 (Outpatient only)

K/µL

Cell Count, Any body fluid

Any age

Intracellular organisms

Non CSF- Blast and Tumor cells to be called as soon as provider is available, which for Inpatients is immediate, for others called next business day

Cell Count, CSF only

Any age

WBC Count >30

/µL

Cell Count, CSF only

Any age

Blasts or Tumor Cells

Hematocrit (PCV)

Any age

≤21.0
≥65.0

%

Hemoglobin

Any age

≤7.0

g/dL

Platelet Count

Any age

≤10,000
≤50,000 (L&D only)
≤100,000 with 2+ microangiopathic changes

/µL

Slide Review/Diff

Any age

Presence of intracellular organisms.
Blasts present on peripheral smear (1st time or relapse only).

% 

WBC

Any age

≤0.5 (Outpatient only)
≥50  (except CLL)

K/µL

MICROBIOLOGY

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Any assay: Potential Bioterrorism Agent

Any age

Presence of potential B. anthracis
Bacillus anthracis (Category A)
Francisella tularensis (Category A)
Yersinia pestis (Category A)
Brucella species (Category B)

Blood Culture

Any age

Any clinically important positive result per protocol

N/A

Stool culture

<18 years

Presence of possible
E. coli O157

N/A

VIROLOGY

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Antigen test, culture, serology, or molecular test

Any age

Positive or suspicious for any H5N1 Influenza, any Pandemic or Bioterrorism Agents (Smallpox, Viral hemorrhagic fever agents)

N/A

Any CSF Assay

Any age

Positive (virus growth)

N/A