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Sanford Laboratories
PO Box 5056
Sioux Falls, SD 57117-5056

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605-328-5464
800-522-2561

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Testing
Critical Values
Sanford Laboratories' Medical Director and Technical Supervisors have defined critical values based on medical significance for selected tests. When a result is considered a "critical value", it is entered into the computer system. An automatic prompt will be displayed with the information necessary to call the critical result. This process will expedite contacting the physician when critical values are encountered.

When Sanford Laboratories is unable to reach a client during night testing hours, a phone call will be placed during the next regular business hours of the client. The report will be printed in the usual fashion.

A summary of the common Adult critical values is listed below.

ANALYTE PANIC
LESS THAN
PANIC
GREATER THAN
CHEMISTRY
Ammonia - 50
Bilirubin, Total - 15.0
Calcium 7.0 12.0
CK (CPK) - 1,000
CK-MB - 15.0
Glucose 60 400
Magnesium 1.2 6.0
Potassium, Serum 3.0 6.0
Sodium, Serum 120 160
HEMATOLOGY & COAGULATION
APTT - 100.0
Hematocrit 21.0 60.0
Hemoglobin 7.0 20.0
Platelet Count 20 1,000
WBC 1.5 50.0
CLINICAL TOXICOLOGY: GENERAL
Alcohol, Blood - 200
Caffeine - 30
Carbon Monoxide - 10.0
CLINICAL TOXICOLOGY: THERAPEUTIC DRUGS
Acetaminophen - 30.0
Amiodarone - 5,000
Carbamazepine 10, 11 epoxide - 7.0
Depakene 0.0 150
Digoxin 0.0 2.4
Dilantin - 40.0
Ethosuximide (Zarontin) 20 149
Gentamicin, Peak - 12.0
Gentamicin, Trough - 2.2
Lithium - 2.0
Mysoline (Primidone) 1.0 20.0
Phenobarbital - 60.0
Quinidine 0.0 7.9
Salicylate - 30.0
Tegretol - 20.0
Theophylline - 25.0
Tobramycin, Peak - 12.0
Tobramycin, Trough - 2.2
Vancomycin Peak - 50.0
Vancomycin Trough - 20.0

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