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Test Code LAB43/1303/ACETM ACETAMINOPHEN

Important Note

Chemistry - Olympus

Specimen Type

PREFERRED:

1 GREEN TOP LITHIUM HEPARIN TUBE

 

ACCEPTABLE:

1 SERUM SEPARATOR TUBE

1 PLAIN RED CLOT TUBE

 

GEL BARRIER TUBES ARE NOT ACCEPTABLE

Specimen Required

MIN: 0.5 ML PLASMA (PREFERRED) OR SERUM

PROCESSING INSTRUCTIONS

INPATIENT: BRING DIRECTLY TO LABORATORY, WITHOUT DELAY.

 

CENTRAL PROCESSING:

SERUM:  ALLOW BLOOD TO CLOT UPRIGHT FOR 30 MINUTES AT ROOM TEMPERATURE, CENTRIFUGE AND DELIVER TO CHEMISTRY, WITHOUT DELAY.
PLASMA:  CENTRIFUGE AS SOON AS POSSIBLE AFTER COLLECTION, THEN DELIVER TO CHEMISTRY, WITHOUT DELAY.

 

OUTPATIENT: 
SERUM:  ALLOW BLOOD TO CLOT UPRIGHT FOR 30 MINUTES AT ROOM TEMPERATURE, CENTRIFUGE, SEPARATE SERUM FROM RED CELLS (INTO A PLASTIC 12 x75 TUBE) AS SOON AS POSSIBLE AFTER COLLECTION, AND THEN REFRIGERATE.
PLASMA:  CENTRIFUGE AND SEPARATE PLASMA FROM RED CELLS (INTO A PLASTIC 12 x75 TUBE) AS SOON AS POSSIBLE AFTER COLLECTION, THEN REFRIGERATE.

METHOD

IMMUNOASSAY

Specimen Retention Time

5 DAYS

TRANSPORT TEMPERATURE

REFRIGERATE

DAY(S) TEST PERFORMED

DAILY

CPT

82003

LOINC

3298-7

SYNONYMS

TYLENOL

SPECIMEN STABILITY FOR TESTING

REFRIGERATED - PLASMA OR SERUM SEPARATED FROM RED CELLS:  UP TO 14 DAYS

Additional Information

Draw sample at least 4 hours after drug ingestion to ensure that the plasma or serum concentrations have peaked.

 

Ingestion of massive quantities of acetaminophen or of a modified-release preparation may result in delayed peak serum acetaminophen levels. In such cases, repeated serum concentrations should be obtained.

 

If the time of ingestion is not known, the acetaminophen half-life, an indicator of potential hepatotoxicity, may be estimated by drawing 2 or more blood samples at intervals of 2 to 3 hours.