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Critical Values

Hematology

Test NameCritical Low ValueCritical High Value
Hematocrit< 18.0%> 61.0%
Hemoglobin< 6.8 g/dL> 19.9 g/dL
Platelet - Child/Newborn< 53 x 103 cells/uL> 916 x 103 cells/uL
Platelet - Adult< 37 x 103 cells/uL> 910 x 103 cells/uL
White Blood Count< 2.0 x 103 cells/uL> 37.0 x 103 cells/uL

Coagulation

Test NameCritical Value
INR> 5.0
aPTT> 68 seconds

Chemistry

Test NameCritical Low ValueCritical High Value
Total BilirubinCritical Value: > 15 mg/dL
Calcium< 6.6 mg/dL> 13.0 mg/dL
Glucose - Adults (FASTING ONLY)< 46 mg/dL> 484 mg/dL
Glucose - Newborn (FASTING
ONLY)
< 30 mg/dL> 300 mg/dL
Phosphorus< 1.2 mg/dL> 8.9 mg/dL
Sodium< 120 meq/L> 158 meq/L
Potassium - Adults< 2.8 meq/L> 6.2 meq/L
Potassium - Newborn< 2.5 meq/L>8.0 meq/L
Chloride< 75 mmol/L> 126 mmol/L
CO2< 11 mmol/L> 40 mmol/L
Magnesium< 1.0 mg/dL> 4.9 mg/dL
BUNCritical Value: > 104 mg/dL
Uric AcidCritical Value: > 13 mg/dL
Creatinine (serum)Critical Value: > 7.4 mg/dL
TriglycerideCritical Value: > 1000 mg/dL

Therapeutic Drugs - Antibiotics

Test NameCritical Low ValueCritical High Value
GentamicinTrough > 2.0 ug/mLPeak > 12.0 ug/m
TobramycinCritical Value: Trough > 2.0 ug/mL
VancomycinCritical Value: Trough > 30 ug/L

Therapeutic Drugs - Analgesics

Test NameCritical Value
Salicylate>/= 40 mg/dL (lethal > 60 mg/dL)
Acetaminophen>/= 200 ug/mL (drawn 4 hours after ingestion)

Therapeutic Drugs - Anti-Epileptics

Test NameCritical Value
Carbamazephine (Tegratol)> 20 ug/mL
Ethosuximide> 200 ug/mL
Phenobarbital> 60 ug/mL
Phenytoin (Dilantin)> 40 ug/mL (toxicity may occur at lower concentrations in presence of low Albumin)
Primidone> 24 ug/mL
Valproic Acid (Depakote)> 200 ug/mL

Therapeutic Drugs - Anti-Depressants

Test NameCritical Value
Lithium (Acute Therapy)> 2.0 meq/L
Imipramine> 400 ng/mL

Therapeutic Drugs - Anti-Dysrhythmics

Test NameCritical Value
Procainamide> 10 ug/mL
Quinidine> 6 ug/mL
Theophylline> 25 ug/mL
Digoxin (Lanoxin)> 2.5 ng/mL

Urinalysis

Test NameCritical Value
MicroscopicForeign cells, Tissue
Blood (males only)Gross (visually bloody)

Microbiology

Test Name
Positive Blood Cultures
Positive Blood Culture Gram Stains
MRSA Cultures - Methicillin resistant Staphylococcus aureus
MRSE Cultures - Methicillin resistant Staphylococcus epidermidis
MRSS Cultures - Methicillin resistant Staphylococcus species
VISA Cultures - Vancomycin intermediate Staphylococcus aureus
VRSA Cultures - Vancomycin resisitant Staphylococcus aureus
Oxacillin resistant Streptococcus pneumonia
Vancomycin resistant Entercoccus species
Positive biological indicator cultures
Positive Campylobacter on stool cultures
Positive E. coli 0157:H7
Positive TB Culture
Positive TB Smear
Positive cerebrospinal fluid culture and smear
Positive body cavity fluid culture
Salmonella & Shigella on stool cultures following postive confirmation from the Health Department

Holiday Information

Garcia Lab will be closed Thursday, November 28, in observance of Thanksgiving. We will resume our regular schedule on Friday.

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