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Test ID FNALO Naloxone - Total (Conjugated/Unconjugated), Screen, Urine

Method Name

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

Reporting Name

Naloxone Screen, Total, U

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
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

Performing Laboratory

NMS Labs

CPT Code Information


80362 if appropriate

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FNALO Naloxone Screen, Total, U In Process


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