Caffeine
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Caffeine, Serum
Test ID: CAFFLON
Test
Method
HPLC-MS/MS
Report Includes
Specimens
Avoid gel separator tubes; Serum; Plasma (Li heparin)
Clinical Utility
Monitor simultaneously with Theophylline.
Test Location
London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5
Test Version
20-Oct-2022
Specimen
Specimens
Avoid gel separator tubes; Serum; Plasma (Li heparin)
Collection Containers
Red top (no additive); Green top (lithium heparin)
Sample Volume
1.0 mL
Minimum Volume
0.5 mL
Specimen Comment
Avoid gel separator tubes.
Collection & Handling
Collection Instructions
Draw trough specimen 0 – 4 hours prior to next dose.
Handling Information
Separate immediately. Store and send frozen.
Stability
| Ambient | 72 hours |
|---|---|
| Refrigerated | 72 hours |
| Frozen | 28 days |
Rejection Criteria
| Specimen | Gel tube |
|---|
Test Version
20-Oct-2022
Performance / Interpretation
Method
HPLC-MS/MS
Turnaround Time
7 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| Caffeine | µmol/L |
|
µg/mL x 5.15 | |
Test Location
London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5
Test Version
20-Oct-2022
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| CAFFLON | 62432Caffeine,S | umol/L |
Test Version
20-Oct-2022