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Orderable Name MORS Morphine and Metabolite, Serum


Ordering Guidance


This test should only be ordered by healthcare professionals to monitor patients who have been prescribed morphine.



Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: Red top (Serum gel/SST are not acceptable)

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL serum

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

Monitoring therapeutic efficacy/compliance in serum specimens of patients who are prescribed morphine

Method Name

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

Specimen Type

Serum Red

Specimen Minimum Volume

Serum: 0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Red Refrigerated (preferred) 14 days
  Frozen  28 days
  Ambient  24 hours

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK

Reference Values

Therapeutic range/Metabolite information (as applicable):

Morphine: 10-80 ng/mL

Hydromorphone: 1.0-30 ng/mL when used as sole therapy; Minor metabolite of morphine

 

Cutoff concentrations:

Morphine: 1.0 ng/mL

Hydromorphone: 1.0 ng/mL

Day(s) Performed

Wednesday

Report Available

2 to 9 days

CPT Code Information

G0480

80361 (if appropriate for select payers)

Clinical Toxicology CPT Code Client Guidance