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Test Code LAB3084 Glucose Level

Important Note

For fastest glucose turnaround time, refer to Glucose Level For Blood Gas Syringe.

Clinical System Name

Glucose Level

Synonyms

LAB3084

GLU

Sugar (Glucose) - Blood

Sample Requirements

Specimen: Whole Blood

Container(s): Lt. Green/Mint Top Lithium Heparin, Lt. Green/Lithium Heparin Microtainer, Gold SST, Gold Microtainer, Dark Green/Sodium Heparin, Red, or Heparinized Syringe

Preferred Vol: 1 mL

Minimum Vol: 0.5 mL

 

Notes:  Fasting for infants is 4 hours, 8 hours for all other ages.  Method is affected by line contamination and hemolysis. Not affected by sodium fluoride.

Processing Instructions

Reject due to: Age of specimen, hemolysis, line contamination

Spin: Y

Aliquot: Y

Temp: 2-8oC

Storage location: Core 5 Chemistry Refrigerator

 

Off-site collection: Avoid hemolysis and line contamination. Spin blood, refrigerate serum or plasma. Method not affected by sodium fluoride. Serum or plasma must be removed from red blood cells within 30 minutes for accurate glucose levels.

Stability

Specimen Type Temperature Time
Whole Blood RT < 30 min
Serum or Plasma RT

≤ 24 H
Serum or Plasma 2-8oC

≤ 7 D
Serum or Plasma -20oC or -70oC

≤ 365 D

 

Serum or plasma must be removed from red blood cells within 30 minutes for accurate glucose levels.

Availability

STAT Performed TAT
Y 24/7 1 H

 

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Core Chemistry

Phone Number: 206-987-2617 (Client Services)

CPT Codes

82947

 

Methodology

Method: Colorimetric method by Vitros 4600

Analytical Volume:  0.02 mL + 0.03 mL dead space                    

Reference Range

Age mg/dL
All Ages 60 - 140

 

Reference range updated 1/11/2024

Description

Fasting plasma glucose concentrations and tolerance to a dose of glucose are used to establish the diagnosis of diabetes mellitus and disorders of carbohydrate metabolism. Glucose measurements are used to monitor therapy in diabetics and in patients with dehydration, coma, hypoglycemia, insulinoma, acidosis, and ketoacidosis.

Critical Values

Age mg/dL
0- 1 M

≤ 50 or ≥ 300
1 M - Adult

≤ 50 or ≥ 700