Critical Value Chart

CHEMISTRY-ADULT*

TEST

CRITICAL VALUE

Acetaminophen

>30 mcg/mL

Ammonia

>100 μmol/L

Arterial pCO2

<20 and >70 mmHg

Arterial pH

<7.20 and >7.60

Arterial pO2

<40 mmHg

BUN

>75 mg/dL (if not consistent with patient history)

Calcium

<6.0 and >13.0 mg/dL

Capillary pO2

<35 mmHg

Carbamazepine

>12 mcg/mL

CK

>1000 U/L

CO2

<10 and >40 mmol/L

Cord Blood pH

< 7.00

Creatinine

>5.0 mg/dL (if not consistent with patient history)

Digoxin

>2.0 ng/mL

Ethanol

>300 mg/dL

Gentamicin, Peak

>10.0 mcg/mL

Gentamicin, Trough

>2.0 mcg/mL

Glucose, Serum or Plasma

<50 and >400 mg/dL

Hepatitis A Antibody (IgM)

Positive

Hepatitis B Core Antibody (IgM)

Positive

Hepatitis B Surface Antigen

Positive

Hepatitis C Antibody

Positive

Ionized Calcium

<3.5 and >6.0 mg/dL

Lactic Acid

>3.9 mmol/L

Lead

>44.9 mcg/mL

Lidocaine

>5.0 mcg/mL

Lithium

>1.5 mmol/L

Magnesium

<1.0 and >4.0 mg/dL

Mass CKMB

>10.0 ng/mL

Osmolality, Serum or Plasma

<265 and >320 mOsm/Kg

Phenobarbital

>40.0 mcg/mL

Phenytoin

>20.0 mcg/mL

Phosphorus

<1.0 mg/dL

Potassium

<3.0 and >6.0 mmol/L

Salicylate

>30.0 mg/dL

Sodium

<120 and >160 mmol/L

Tacrolimus

>20.0 ng/mL

Theophylline

>20.0 mcg/mL

Tobramycin, Peak

>10.0 mcg/mL

Tobramycin, Trough

>2.0 mcg/mL

Troponin-I

>1.0 ng/mL

Urine Protein (OB/Gyn)

>500 mg/24hr

Valproic Acid

>119 mcg/mL

Vancomycin, Peak

>60.0 mcg/mL

Vancomycin, Trough

>23.0 mcg/mL

 Rev. 3/17

CHEMISTRY-PEDIATRIC*

TEST

CRITICAL VALUES

 

0-28 days

29 days – 18 years

Bilirubin, Neonatal

>15.0 mg/dL

If >29 days, not neonatal

Calcium

<6.5 and >11.0 mg/dL

<6.0 and >13.0 mg/dL

Chloride

<85 and >115 mmol/L

Not established

CO2

<15 and >35 mmol/L

<10 and >40 mmol/L

Creatinine

>2.0 mg/dL

>2.5 mg/dL

Glucose

<30 and >250 mg/dL

<50 and >400 mg/dL

Magnesium

<1.0 and >3.0 mg/dL

<1.0 and >4.0 mg/dL

Phosphorus

<3.5 and > 10.0 mg/dL

<2.5 mg/dL

Potassium

<3.0 and >7.0 mmol/L

<3.0 and >6.0 mmol/L

Sodium

<125 and >155 mmol/L

<120 and >160 mmol/L

HEMATOLOGY

TEST

CRITICAL VALUE

WBC

<2.0 K/mcL

WBC (Outpatient)

>30.0 K/mcL

Hemoglobin

<7.0 g/dL

Hematocrit

<20.0 %

Platelet

<20.0 or >1,000 K/mcL

INR

>4.5

APTT

>90 sec

MICROBIOLOGY

TEST

CRITICAL VALUE

Gram Stain

Positive on Blood or CSF

Blood Culture

Positive

CSF Culture

Positive

 

> = Greater than
< = Less than

*These critical value test results may imply a life-threatening situation for the patient and will be brought to the immediate attention of the physician or a responsible person.

All critical value results given verbally, including over the telephone, will be asked to be “read-back” by the person receiving the test result(s). 

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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