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Hydroxychloroquine

CPT: 80375

Synonyms

  • Plaquenil

Special Instructions

This assay is currently not available in New York state.


Expected Turnaround Time

7 days


Specimen Requirements


Specimen

Serum or plasma


Volume

1.0 mL


Minimum Volume

0.4 mL


Container

Red-top tube, gel-barrier tube, lavender (EDTA), or green-top tube


Collection

Collect into vacutainer and separate within 2 hours. Send serum or plasma in a plastic transport tube.


Storage Instructions

Freeze


Stability Requirements

Temperature

Period

Room temperature

17 days

Refrigerated

17 days

Frozen

23 days

Freeze/thaw cycles

Stable x6


Causes for Rejection

Gross hemolysis


Test Details


Use

This assay measures the plasma/serum concentration of hydroxychloroquine (Plaquenil). This test is used to rule patient noncompliance or to look for excessive levels of drug.


Limitations

This test should only be performed for patients currently on hydroxychloroquine therapy.


Methodology

LC-MS/MS


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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2018, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf