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HelpTest Code Caffeine Caffeine Level
Clinical System Name
Caffeine Level
Synonyms
Caffeine Level
Sample Requirements
Specimen: Whole Blood
Container(s): Dark Green/Sodium Heparin, Red, Gold/SST, or Lavender/EDTA
Preferred Vol: 1.0 mL
Minimum Vol: 0.2 mL
Note: Trough levels preferred. Serum/plasma must be removed from gel SST within 24 hours of collection.
Processing Instructions
Reject due to:
Spin: Y
Aliquot: Y
Temp: 2 - 4 C
Storage location: Aliquot 0.1 - 0.5 mL serum. This test is always STAT. When a Send Outs team member is present, notify them IMMEDIATELY, otherwise send sample immediately to HMC via Delivery Express (Direct).
Off-site collection:
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Room temp | ||
| Refrigerated | ||
| Frozen |
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | Daily | 1 d |
Performing Laboratory
Harborview Medical Center
325 9th Ave, Room GWH47
Seattle, WA 98104
Phone Number: (206) 744-3451
Department
Department: Send Outs
Phone Number: (206) 987-2563
CPT Codes
80299
Methodology
Method: Enzyme Multiplied Immunoassay Technique (EMIT)
Analytical Volume: 0.1 mL Serum or Plasma
Limitations:
Reference Range
| Females (mcg/mL) | Males (mcg/mL) | |
| 0 - 18 yrs | 5 - 20 | 5 - 20 |
| 19 yrs - | 5 - 15 | 5 - 15 |
| Critical | >50 | >50 |
Send Out Instructions
| Reference Test Name: | Caffeine Quantitative |
| Reference Test Number: | CAFQN |
| Instructions: | This test is always STAT. Send all STATS to HMC via Delivery Express. |