Glucose, 2 hr pp

Alphabetical Test listing

Glucose, 2 hr pp-111

Glucose, 2 hr pp
Post prandial glucose

The ordering provider should direct patient as to what food/drink should be consumed prior to the sample collection.


Lithium heparin (Li hep) plasma
1.0 mL
0.2 mL
  • Draw specimen 2 hours after eating
  • 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)

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


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


  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


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)



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
1 day



Fasting: 70 -99 mg/dL

2 hour: 70 - 139 mg/dL


<54 mg/dL or >500 mg/dL

* No call if collected within 30 minutes of a glucose meter result.


No fasting sample is required, but can be ordered separately. If fasting test is ordered, and result is >126, contact ordering physician to determine if lab should continue procedure.