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Glucose, non-fasting

Item Value
Approval req'd? No
Available Stat? Yes
Test code GLU
Test group Glucose
Performed by Parnassus & Mt. Zion Chemistry
In House Availability Test available 24 hours per day 7 days per week
Method Oxygen consumption (O2 electrode with glucose oxidase)
Container type Gold top or Light Green top (Gray or Dark Green top acceptable)
Amount to Collect 1 mL blood Click here for Microdetermination info
Sample type Serum or plasma
Preferred volume 0.5 mL serum or plasma
Min. Volume 0.2 mL serum or plasma Click here for Microdetermination info
Processing notes Note on specimen if sample was from a gray top tube.
Units mg/dL
Normal range Pediatrics:
< 1 month 55-115 mg/dL
1 month - 1 year 55-123 mg/dL
1 year - 17 years 56-145 mg/dL


Adults (≥ 18 years old):
Normal 70-199 mg/dL
Impaired glucose tolerance 140-199 mg/dL*
Diabetes mellitus > 199 mg/dL**


* If measured 2 hour postprandial
** AND Sx of diabetes such as polyuria, polydipsia or unexplained weight loss

1. Normal range for infants 0 to <1 month adapted from Soldin, Steven J., "Pediatric Reference Intervals", 6th edition, AACC Press, 2007, method 1.
2. Normal range for 1 month to <18 years adapted from Beckman Coulter's "Pediatric Reference Range Guidelines for Synchron Systems" Bulletin 9345
3. ADA guidelines used for adults.
Critical value
Neonates < 30 mg/dL or > 170 mg/dL
≥ 1 month old < 50 mg/dL or > 500 mg/dL
Synonyms Diabetes mellitus
Stability Room temperature 8 hours, refrigerated 2 days
Turn around times STAT 1 hour, Routine 4 hours
Additional information To convert mg/dl to mmol/L (SI units) multiply by 0.0555.

The above reference ranges reflect new criteria for the diagnosis of diabetes mellitus established by the American Diabetes Association ((Diabetes Care, Volume 34, Supplement 1, January 2011). All recommendations of the ADA are based upon plasma or serum levels). The diagnosis of diabetes mellitus should NOT be made until one of these abnormalities has been confirmed on a subsequent day. Impaired glucose tolerance/impaired fasting glucose implies an increased risk of future diabetes.

Reference ranges for random glucose adopted from Soldin et al. Pediatric Reference Intervals, 6th edition, 2007 and from Pediatric Reference Range Guidelines for Synchron Systems from Beckman Coulter.
CPT coding 82947
Medical Necessity? Yes. Click here for more information
LOINC code 2345-7
Last Updated 10/15/2014 11:47:48 AM
Entry Number 426
Lab Procedure Link Click here for Procedure
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