Glucose, gestational screen

Alphabetical Test listing

Glucose, gestational screen-1078

  
Glucose, gestational screen
  
1078
  
82950.1
  
GLG
  

Screening test for gestational diabetes

  
Lithium heparin (Li hep) plasma
  
  
1.0 mL
  
0.2 mL
  
  1. Give patient 50 gm glucose dose
  2. Draw 1 hour after dose
  3. Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting
  

Spin within two (2) hours of sample collection

  

Lt green plasma separator (PST)

  
Serum
Sodium fluoride (Na Fl) whole blood or plasma
EDTA plasma
  

Gold:

  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin within two (2) hours of sample collection

Lavender:

  1. Spin
  2. Transfer the plasma to an AHL False Bottom Plasma/Serum Transport Tube labeled as the appropriate plasma type, within two (2) hours of sample collection

Grey:

If a grey top tube will not reach the Central Laboratory within 24 hours of collection, it should be spun down, and the plasma transferred to an AHL False Bottom Plasma/Serum Transport Tube labeled as NaFl plasma. 

Additional testing cannot be added on to this sample.

  

Gold serum separator (SST) tube

Grey Sodium flouride (NaFl) or

False bottom plasma/serum transport vial/tube (AHL)

  

Architect:

Serum/plasma:

Refrigerated  - 7 days

NaFl whole blood:

Refrigerated - 24 hours

 

Roche:

Serum/plasma:

Refrigerated - 3 days

Ambient - 8 hours

NaFl whole blood:

Ambient - 3 days

  
  • Improper labels (unlabeled or mislabeled)
  • Hemolysis (some procedures)
  • Improper anticoagulant or ratio
  • Delay in transport
  • Improper storage temperature affecting results
  • Inappropriate timing of collection
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)
  
AHL - Chemistry: C
  
Daily
  
1 day
  

Hexokinase

  

Architect:

< 140 mg/dL

 

Roche:

65 - 140 mg/dL

  

A glucose result of >140 indicates the need for more extensive testing (i.e. 3 hr Gestational tolerance)

  
82950
  
11/30/2001
  
01/01/2023
  
11/09/2021