Hydroxychloroquine, Blood
Test Mnemonic
HYCQWB
CPT Codes
- 80220 - QTY (1)
Includes
- Hydroxychloroquine, Blood
Performing Laboratory
National Med Serv Inc
FDA Category
Laboratory Developed Test
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Whole blood | EDTA (Lavender) | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.2 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Refrigerated | 30 days |
| Ambient | 30 days |
| Frozen | 30 days |
Days Performed
Varies
Turnaround Time
4 - 8 days
Methodology
| Name | Description |
|---|---|
| High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) |
Special Info
This test is New York DOH approved.
Clinical Info
This test is useful to check for therapeuetic levels and compliance prior to escalating care to more immunosuppressive medications. Hydroxychloroquine is the mainstay of treatment for patients with lupus, with every patient requiring its use unless there are significant side effects. Optimal whole blood levels of hydroxychloroquine are associated with better health outcomes as demonstrated by newer data that provide a therapeutic range of blood levels, as well as a range associated with increased retinal toxicity.