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Laboratory Critical/Panic Value List

Please read our Critical Values Policy here.

CHEMISTRY
| COAGULATION | HEMATOLOGY | MICROBIOLOGY | VIROLOGY


CHEMISTRY

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Anion Gap

Any age

>30

mmol/L

Calcium *

Any age

<6.5
>13

mg/dL

Chloride

Any age
Any age

<80
>120

mmol/L

CO2

Any age

<10
>40

mmol/L

CO Hemoglobin

Any age

>20

%

Free (ionized) Calcium *

Any age

<0.8
>1.6

mmol/L

Glucose

0-2 days
>2 days & <1 year
>1 year

<35
<40
<55

mg/dL

<30 days
>30 days & <17 yrs
>17 yrs

>200
>300
>450

mg/dL

Iron, Serum

Any age

≥350

ug/dL

Magnesium

Any age

<1.0
>3.5

mg/dL

pCO2

Any age

>65

mmHg

pH

Any age

<7.20
>7.60

pH units

Phosphorus

<3 years of age
3-12 years of age
>12 years of age

≤2.5
≤2.0
≤1.5

mg/dL

pO2 (arterial)

Any age

<50

mmHg

Potassium

Less than 1 week
Older than 1 week
Any age

<2.5
<3.0
>6.0

mmol/L

Procalcitonin

>1 month

>2

ng/mL

Sepsis Protocol Lactate

Any age

>4.0

mmol/L

Sodium

Any age
Any age

<125
>160

mmol/L

Total Bilirubin

<1 day
>1 day <2 days
>2 days <30 days

≥8
≥13
≥15

mg/dL

Troponin 1

Any age

≥0.3

ng/mL

* Calcium: mmol/L (SI unit) = 0.25 (conversion factor) x mg/dL (conventional unit).

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COAGULATION

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Fibrinogen

Any age

<100

mg/dL

Heparin, unfractionated

Any age

<0.1
>0.7

IU/mL
IU/mL

Heparin Induced Anti-Body (PF 4 Enhanced and PF 4 IgG, Elisa)

Any Age

PF4 Enhanced: Positive (O.D.≥0.400) PF4:IgG: Positive (O.D.≥0.400)

N/A

PTT

Any age

≥100

sec

PT INR

Any age

>5.0 INR

 

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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- Blasts and Tumor cells to be called as soon as a provider is available, which for inpatients is immediate, for others called next business day.)

 

Cell Count, CSF only

Any age

WBC Count >30
(excluding peripheral blood contamination)

/µL

Cell Count, CSF only

Any age

Blasts or Tumor Cells

 

Gram Stain

Any age

Positive

N/A

Hematocrit (PCV)

Any age

≤21.0
≥65.0

%

Hemoglobin

Any age

≤7.0

g/dL

Malaria Screening

Any age

Positive

N/A

Platelet Count

Any age

≤10,000
≤50,000 (L&D, OB outpatient clinics, and Perinatal Diagnostic Center only)
≤100,000 with 2+microangiopathic changes

/µL

Slide Review/Diff

Any age

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

Stool

Male/Female <18 Years

Sperm

N/A

Urinalysis

Female <18 Years

Sperm or Trichomonas

N/A

Urinalysis

Male <18 Years

Trichomonas

N/A

WBC

Any age

≤0.5 (Outpatient only)
≥50

K/µL

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MICROBIOLOGY

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Any assay: Potential Bioterrorism Agent

Any age

Presence of potential B. anthracis or any BT agent.

Bacillus anthracis (Category A)

Francisella tularensis (Category A)

Yersinia pestis (Category A)

Brucella species (Category B)

N/A

Blood Culture

Any age

Any clinically important positive result per protocol

N/A

Mycobacterium Tuberculosis PCR Test

Any Age

Positive on Tissue or Culture

N/A

Stool culture

<18 years

Positive Shiga toxin producing E. Coli

N/A

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VIROLOGY

ANALYTE

AGE RANGE

CRITICAL VALUE

UNITS

Antigen test, culture, serology, or molecular test

Any age

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

N/A

Any CSF Assay

Any age

Positive (including virus growth or molecular test)

N/A

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