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Test Code ACAM Acetaminophen level, Serum

Patient Preparation

None

Specimen Type

 

Specimen Type

Acceptable

Serum

 

Specimen Container

 

Specimen Container

Specimen Type

Container

Additive

Serum

Red Top

None

 

Specimen Volume

Specimen Volume

Optimum

1.0 mL

Minimum

0.5 mL

 

Specimen Stability

Specimen Stability

Specimen Type

Storage Temperature

Stability

Serum

Room Temperature  (15 - 25˚C)

24 hours Capped

Refrigerated  (2-8˚C)

7 days Capped

Frozen  (-20˚C)

6 months Capped

 

Specimen Collection

1. Collect blood form a stasis-free vein using standard collection container.

2. Fill collection tube completely and keep tube tightly stoppered at all times.

3. Avoid foaming of specimen.

UCMC Handling and Transport Instructions

1. Unspun whole blood samples need to be received in the Lab Service Center within 2 hours of collection at room temperature.

2. Unspun whole blood samples received in the Lab Service Center after 2 hours of collection must be refrigerated at 2-8°C.

3. If the specimen cannot be sent to the Lab Service Center within 6 hours of collection it must be spun, aliquoted and submitted based on stability requirements (please see the stability section for further information).

Offsite Handling and Transport Instructions

1. Unspun whole blood samples need to be received in the Lab Service Center within 2 hours of collection at room temperature.

2. Unspun whole blood samples received in the Lab Service Center after 2 hours of collection must be refrigerated at 2-8°C.

3. If the specimen cannot be sent to the Lab Service Center within 6 hours of collection it must be spun, aliquoted and submitted based on stability requirements (please see the stability section for further information).

Rejection Criteria

1. Whole blood/unspun specimens greater than 6 hours will be rejected.  

2. If specimens Handling and Transport Criteria are not met, the specimens will be rejected.

3. Specimens will be rejected if stability requirements are not met.  

4. Improper labeling will lead to rejected samples.

5. Tubes containing serum separator gels will be rejected.

Availabiltiy

24 hours, 7 days a week including holidays.

Turnaround Time

Routine Testing: 4 hours

Stat Testing: 1 hour

Test Usage

Monitor serum acetaminophen concentrations.

Test Methodology

Homogeneous Enzyme Immunoassay

Additional Information

Clinical evidence of liver and kidney damage is usually delayed for 24 hours or more after ingestion. Assay can be used to provide early diagnostic indications for treatment.

Reference Range

Therapeutic range:  10 – 30 µg/mL  

Critical Values

Critical Value: >150 µg/mL

Test Limitations

Possibility that other substances and/or factors may interfere with the test and cause unreliable results. Rare cases of gammopathy may cause unreliable results. Results should be assessed in conjunction with the patient's medical history, clinical examination, and other findings.

CPT Code

None

Fee Code

31000479

Synonyms

Tylenol