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Test Code POSTPRANDIAL Glucose, 2 Hour Postprandial

Important Note

Fasting Glucose Level: 70-109 mg/dL

Impaired Fasting Glucose: 110-125 mg/dL

Defined by the ADA as a category at risk for future diabetes and cardiovascular disease.

The American Diabetes Association (ADA) recommends the following criteria for the diagnosis of diabetes:

Abnormal Fasting Glucose: >126 mg/dL

Symptoms of diabetes and a random glucose: >200 mg/dL 2 Hour Postprandial Glucose: <140 mg/dL

O’Sullivan 50 gram: <140 mg/dL

A plasma glucose level greater than 140 mg/dL 1 hour after a 50 gram oral glucose load indicates the need for a full diagnostic 100 gram 3-hour oral glucose tolerance test performed in the fasting state.

2 Hour Glucose Tolerance Test – Oral Glucose Tolerance Test

Normal glucose tolerance: <140 mg/dL

Impaired 2 hr glucose tolerance (pre-diabetes): 140-199 mg/dL

Diabetes: >200 mg/dL

3 Hour Glucose Tolerance Test – Gestational Diabetes Diagnostic

Fasting (prior to glucose load): 95 mg/dL

1 hour after glucose load: 180 mg/dL

2 hours after glucose load: 155 mg/dL

3 hours after glucose load: 140 mg/dL

Indication: If two or more values meet or exceed the target level, gestational diabetes is diagnosed.

Please see critical value reporting information below:

<50 mg/dL >1 week
<25 mg/dL <1 week 
>400 mg/dL >1yr old
>250mg/dL < 1yr old
Infectious

Additional Codes

MEDITECH MNEMONIC:

GLUCOSE2HRPP

GLU

Specimen Requirements

Preferred Specimen:

1mL Lithium Heparin plasma

 

Acceptable Specimen:

1mL serum from a gel or non-gel tube

 

Acceptable Specimen:

1mL Sodium Fluoride plasma (glucose only)

 

Minimum Volume:

0.5mL plasma or serum (volume does not include repeat or reflexed testing)

Transport Temperature/Stability

Transport Container:

Transport Tube

 

Preferred Transport Temperature:

Refrigerated

 

Specimen Stability (after centrifugation):

Ambient:  <8 hours

Refrigerated:  <3 days

Frozen:  undefined

 

Setup Schedule:

SUN-SAT

Performing Laboratory

Willis Knighton Medical Center

Willis Knighton Bossier

Willis Knighton Pierremont

Willis Knighton South