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HelpTest ID HCQ Hydroxychloroquine, Serum
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
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:
1. Collect specimen immediately before next scheduled dose.
2. Within 2 hours of collection, centrifuge, and aliquot serum into a plastic vial.
Reporting Name
Hydroxychloroquine, SSpecimen Type
Serum RedSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Refrigerated (preferred) | 28 days |
| Frozen | 28 days | |
| Ambient | 21 days |
Report Available
3 to 7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| HCQ | Hydroxychloroquine, S | 3684-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 64947 | Hydroxychloroquine, S | 3684-8 |
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.
Useful For
Monitoring serum hydroxychloroquine concentrations, assessing compliance, and adjusting dosage in patients
Day(s) Performed
Monday, Wednesday, Friday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
80220
Specimen Minimum Volume
Serum: 0.5 mL
Reference Values
For suppressive treatment of malaria, suggested plasma or serum concentrations should be >10 ng/mL.
For systemic lupus erythematosus, proposed serum target concentrations should be ≥500 ng/mL.