Glucose, Fasting, Serum
Test Code
GLUF
Description
Collect
Gray top tube [NaF].
Plain red top or SST tube also acceptable.
Specimen Preparation
Onsite [NJH]: Transport to lab within 1 hour.
Offsite: Separate serum or plasma from cells within 1 hour by centrifuge and aliquot into a labeled polypropylene or similar plastic tube.
Preferred volume: 1 mL plasma or serum
Patient Prep
Patient should be fasting for 8-14 hours prior to blood collection.
Pediatric Collection
Minimum volume: 0.1 mL serum or plasma
Storage Transport Temp
Offsite: Send frozen serum or plasma Priority Overnight via FedEx and in a well insulated container on dry ice.
Stability
Stability after cell separation:
8 hours at at RT (15-25°C)
72 hours refrigerated at 2-8°C
>24 hours frozen at -20°C Fluoride preserved plasma samples stable at RT (15-25°C) for 72 hours
Performed
Monday - Friday
Methodology
Hexokinase
Reported
4 hour routine, 1 hour STAT
Department
Core LabSynonyms
Hexokinase (Glucose, fasting, serum);Plasma Glucose;GLUFX
Reference Interval
| Glucose, fasting |
Human |
|
|
Male |
Female |
|
|
mg/dL |
||
|
1 week - 11 months |
70-123 |
55-114 |
|
1 year - 17 years |
56-145 |
56-144 |
|
18+ years |
65-110 |
65-110 |
CPT Code
82947