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Test Code LAB20455 Naloxone - Total (Conjugated/Unconjugated), Screen, Urine

Reporting Name

Naloxone Screen, Total, U

Performing Laboratory

NMS Labs

Specimen Type


Specimen Required

Collect 1 mL random urine. Send specimen refrigerated in a plastic (preservative-free) urine container.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 30 days
  Frozen  365 days
  Ambient  7 days

Reference Values

Reporting limit determined each analysis (screen and confirmation)


Naloxone – Total ng/mL

  Synonym(s): Narcan


Naloxone – Confirmation ng/mL

  Synonym(s): Narcan

Day(s) and Time(s) Performed

Tuesday, Thursday

CPT Code Information


80362 if appropriate

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FNALO Naloxone Screen, Total, U Not Provided


Result ID Test Result Name Result LOINC Value
Z1488 Naloxone Screen, Total, U 42618-9
Z1409 Reporting Limit 19147-8
Z1410 Naloxone Confirmation, Total, U 77207-9
Z1411 Reporting Limit 19147-8

Reject Due To

Specimens other than Urine
Anticoagulants other than NA
Hemolysis NA
Lipemia NA
Icteric NA

Method Name

High Performance Liquid Chromatography/Tandem Mass
Spectrometry (LC-MS/MS)

Test Classification

This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the U.S. Food and Drug Administration.