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HelpOrderable Name HCQWB Hydroxychloroquine, Blood
Specimen Required
Container/Tube: Lavender top (EDTA)
Specimen Volume: 1 mL
Collection Instructions:
1. Collect specimen immediately before next scheduled dose.
2. Send whole blood specimen in original tube. Do not aliquot.
Useful For
Monitoring whole blood hydroxychloroquine concentrations, assessing compliance, and adjusting dosage in patients
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Specimen Type
Whole Blood EDTASpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood EDTA | Refrigerated (preferred) | 28 days |
| Ambient | 28 days | |
| Frozen | 28 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
| Clotted specimens | Reject |
Reference Values
≥200 ng/mL
Day(s) Performed
Tuesday, Thursday
Report Available
3 to 7 daysCPT Code Information
80220