Test Details
Methodology
High-pressure liquid chromatography with fluorescence detection (HPLC/FL).
Result Turnaround Time
7 - 10 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
Therapeutic drug management
Limitations
Escitalopram is not differentiated from racemic citalopram by this assay.
Specimen Requirements
Specimen
Serum or plasma
Volume
2 mL
Minimum Volume
0.5 mL
Container
Red-top tube or lavender-top (EDTA) tube. Gel-barrier tubes are not recommended.
Collection Instructions
Serum or plasma must be separated from cells within 45 minutes of venipuncture.
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 3 days |
Refrigerated | 3 days |
Frozen | 2 weeks |
Reference Range
Steady-state plasma concentrations of escitalopram in patients receiving recommended daily dosages: up to 60 ng/mL
Storage Instructions
Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.
Causes for Rejection
Gel-barrier tubes
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 247200 | Escitalopram, SP | 247201 | Escitalopram | ng/mL | 34405-1 | |
| 247200 | Escitalopram, SP | 247202 | Desmethylcitalopram | ng/mL | 35106-4 | |
| Order Code | 247200 | |||||
| Order Code Name | Escitalopram, SP | |||||
| Order Loinc | ||||||
| Result Code | 247201 | |||||
| Result Code Name | Escitalopram | |||||
| UofM | ng/mL | |||||
| Result LOINC | 34405-1 | |||||
| Order Code | 247200 | |||||
| Order Code Name | Escitalopram, SP | |||||
| Order Loinc | ||||||
| Result Code | 247202 | |||||
| Result Code Name | Desmethylcitalopram | |||||
| UofM | ng/mL | |||||
| Result LOINC | 35106-4 |