Dexamethasone, Serum/Plasma by LC-MS/MS
Test Mnemonic
DEXA
CPT Codes
- 80299 - QTY (1)
LOINC ®
14062-4
Includes
- Dexamethasone
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Refrigerated | Collect between 8 - 10 a.m. Separate serum from cells ASAP or within 2 hours of collection and transfer to standard aliquot tube. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | Sodium or Lithium heparin (Green) | Refrigerated | Collect between 8 - 10 a.m. Separate plasma from cells ASAP or within 2 hours of collection and transfer to standard aliquot tube. | |
| 1 mL | Plasma | EDTA (Lavender) | Refrigerated | Collect between 8 - 10 a.m. Separate plasma from cells ASAP or within 2 hours of collection and transfer to standard aliquot tube. | |
| 1 mL | Serum | No additive (Red) | Refrigerated | Collect between 8 - 10 a.m. Separate serum from cells ASAP or within 2 hours of collection and transfer to standard aliquot tube. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: 24 hours |
| Refrigerated | After separation from cells: 1 week |
| Frozen | After separation from cells: 6 months |
Days Performed
Wed, Sat
Turnaround Time
3 - 6 days
Methodology
| Name | Description |
|---|---|
| Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) |
Special Info
Specimen should be collected between 8-10 a.m. This test is New York DOH approved.
Clinical Info
Compliance assessment of dexamethasone suppression testing.