CLS Home
General Information About CLS
Directory of Lab Tests & Services
Advanced Search
Information for Patients
Information for Healthcare Professionals
List All Test Names Beginning With:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Glossary

Gestational Diabetes Screen

Source

Blood

 
Mnemonic GESTSC 
Specimen Requirements

Fasting status not required.

50 gram glucose drink to be administered to patient.
Blood sample is collected one hour later.

1 x 5 mL light green (mint) top PST tube.  Gold top SST tube is also acceptable.

0.2 mL heparinized plasma or serum
Pediatric: 0.1 mL serum

 

 
Specimen Handling  
Additional Information

Guidelines suggest testing between 24th and 28th week of gestation.

For Diabetes Clinical Practice Guidelines, please see:
www.diabetes.ca/cpg2003

 
Testing Location Chemistry-All Sites 
Testing Frequency Daily 
Alternate Name(s)

 

 
Reference Interval <7.8 mmol/L at 1 hour after 50 g glucose load, between 24th and 28th week of pregnancy 


| Back |