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Test Code IMUR Mercaptopurine (6-MP, Purinethol)

Additional Codes

EMR Interface Order Code: 14875

Reporting Name

Mercaptopurine (6-MP, Purinethol)

Performing Laboratory

Medtox Laboratories, Inc.

Specimen Type

Varies


Specimen Required


Submit only 1 of the following specimens:

 

Plasma

Draw blood in a green-top (sodium heparin) tube(s), plasma gel tube is not acceptable. Spin down and send 2 mL sodium heparin plasma refrigerated in a plastic vial.

 

Serum

Draw blood in a plain, red-top tube(s), serum gel tube is not acceptable. Spin down and send 2 mL of serum refrigerated in a plastic vial.


Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Refrigerated (preferred) 7 days
  Frozen  180 days
  Ambient  72 hours

Reject Due To

Hemolysis

NA

Thawing

NA

Lipemia

NA

Icterus

NA

Other

NA

Reference Values

Units:          ng/mL

 

Mercaptopurine may be administered as an antineoplastic or may be present as a metabolite of the immunosuppressant drug azathioprine. Therapeutic and toxic ranges have not been established. Usual therapeutic doses of either mercaptopurine or azathioprine produce 6-mercaptopurine serum concentrations of less than 1000 ng/mL.

 

Day(s) and Time(s) Performed

Monday through Sunday

CPT Code Information

80375

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FMERC Mercaptopurine (6-MP, Purinethol) 11242-5

 

Result ID Test Result Name Result LOINC Value
Z1190 6-Mercaptopurine 11242-5

Method Name

High Performance Liquid Chromatography with Ultraviolet Detection (HPLC-UV)