Special Instructions

This is a screening test usually administered between 24-28 weeks of pregnancy.

Test Includes

Blood glucose level collected one hour after ingestion of 50 g glucose

Turnaround Time

Performed Mon-Fri, 0700-1700; turnaround time is 2 hours routine, 40 minutes stat.

Patient Preparation

Patient does not need to be fasting and needs no preparation. The gestational diabetic screen is performed without regard to last meal or time of day.

Specimen Type

Blood

Collection Containers

Green (lithium heparin, gel)
Alternate Containers: Green (lithium heparin, no gel), Green (lithium heparin, gel) on ICE, Red (no gel), Red or Gold (Gel)

Collection Instructions

Glucose Tolerance Protocol



Hospital/CSC Laboratories: Chemistry Tests Containers Chart


Clinic Laboratories performing Hemocue testing: collect specimens in purple top (EDTA) or gray top (sodium fluoride). Testing must be performed within 30 minutes of collection.



For Womens Health Clinic:

  1. WHC will drop off request form to be filed in the future order file.
  2. Patient will check into the lab to drink the 50 g glucola (no blood is drawn pre-glucola for the 50 g screen).
  3. OP Lab will set the timer for 1 hour.
  4. OP Lab will send a lab staff to WHC to draw the 1 hour post sample and other labs if needed.

Collection Volume

2.5 mL

Minimum Collection Volume

0.6 mL

Specimen Preparation

For testing performed at hospital/CSC locations: centrifuge and aliquot 1.25 mL, 0.2 mL minimum within 2 hours of collection for optimal results. 6-hour aliquot time is acceptable. Store in refrigerator.


For testing performed at clinic locations on a Hemocue: do not process. Test within 30 minutes of collection

Shipping Instructions

Ship at refrigerated temperature.

Stability (from collection to initiation)

Once separated from cells: 8 hours at room temperature; 72 hours refrigerated.

Containers

Green (Lithium Heparin, Gel)

Alternate Containers

Green (Lithium Heparin, No Gel)

Green (Lithium Heparin, Gel) on ICE

Red (No Gel)

Red or Gold (Gel)

Contraindications

If patient becomes ill or vomits, test must be discontinued.

CPT Disclaimer

The Current Procedural Terminology (CPT) Codes published in the M Health Fairview Test Directory are based on American Medical Association (AMA) guidelines and are provided for informational purposes only. CPT codes are provided only as guidance to assist clients with billing. CPT coding is the responsibility of the billing party. M Health Fairview Laboratories does not assume responsibility for billing errors due to reliance on the CPT codes listed in this Test Directory. Charges may vary due to reflexing, susceptibilities, specimen source, patient age, methodology requirements, etc..

Patient Price Inquiries

Requester Contact Information
Patient and UMP/FV Care Team Fairview Consumer Line at 612-672-1048
MRL Outreach Client dept-mrl-business-assessment@fairview.org
Research research@fairview.org

CPT Codes

CPTQtyHC HospitalPR ClinicNote
82950130082950028295001HC GLUCOSE POST DOSE
82950130082950028295001HC GLUCOSE POST DOSE

Methodology

Bichromatic endpoint, glucose oxidase


Woodwinds: Hexokinase


Clinics (Hemocue): whole blood assay with erythrocyte hemolysis and glucose oxidation. Dual wavelength photometric quantification to report a plasma equivalent value.

MRL Test Build

Test Name Component Required Description Type LOINC
LAB3503     Glucose Tolerance Gestational Screen (1 Hour) Orderable  
  SRC_1001 Y Blood specimen source: Prompt  
  1230003137   Patient Fasting > 8hrs? Result  
  1230004467   Gluose Gest Screen 1hr 50g Result 1504-0

Data Type / Multiple Choice Response

SRC_1001
Blood specimen source:
Arm, Left|Arm, Right|Hand, Left|Hand, Right|Blood, Capillary|Other|Peripheral Blood
Default: Peripheral Blood

Contact

For questions regarding the test code Interface Map, please contact DEPT-LAB-CLIENT-INTERFACE@fairview.org
Ordering

Special Instructions

This is a screening test usually administered between 24-28 weeks of pregnancy.

Test Includes

Blood glucose level collected one hour after ingestion of 50 g glucose

Turnaround Time

Performed Mon-Fri, 0700-1700; turnaround time is 2 hours routine, 40 minutes stat.
Collection & Processing

Patient Preparation

Patient does not need to be fasting and needs no preparation. The gestational diabetic screen is performed without regard to last meal or time of day.

Specimen Type

Blood

Collection Containers

Green (lithium heparin, gel)
Alternate Containers: Green (lithium heparin, no gel), Green (lithium heparin, gel) on ICE, Red (no gel), Red or Gold (Gel)

Collection Instructions

Glucose Tolerance Protocol



Hospital/CSC Laboratories: Chemistry Tests Containers Chart


Clinic Laboratories performing Hemocue testing: collect specimens in purple top (EDTA) or gray top (sodium fluoride). Testing must be performed within 30 minutes of collection.



For Womens Health Clinic:

  1. WHC will drop off request form to be filed in the future order file.
  2. Patient will check into the lab to drink the 50 g glucola (no blood is drawn pre-glucola for the 50 g screen).
  3. OP Lab will set the timer for 1 hour.
  4. OP Lab will send a lab staff to WHC to draw the 1 hour post sample and other labs if needed.

Collection Volume

2.5 mL

Minimum Collection Volume

0.6 mL

Specimen Preparation

For testing performed at hospital/CSC locations: centrifuge and aliquot 1.25 mL, 0.2 mL minimum within 2 hours of collection for optimal results. 6-hour aliquot time is acceptable. Store in refrigerator.


For testing performed at clinic locations on a Hemocue: do not process. Test within 30 minutes of collection

Shipping Instructions

Ship at refrigerated temperature.

Stability (from collection to initiation)

Once separated from cells: 8 hours at room temperature; 72 hours refrigerated.

Containers

Containers

Green (Lithium Heparin, Gel)

Alternate Containers

Green (Lithium Heparin, No Gel)

Green (Lithium Heparin, Gel) on ICE

Red (No Gel)

Red or Gold (Gel)

Result Interpretation

Contraindications

If patient becomes ill or vomits, test must be discontinued.
Administrative

CPT Disclaimer

The Current Procedural Terminology (CPT) Codes published in the M Health Fairview Test Directory are based on American Medical Association (AMA) guidelines and are provided for informational purposes only. CPT codes are provided only as guidance to assist clients with billing. CPT coding is the responsibility of the billing party. M Health Fairview Laboratories does not assume responsibility for billing errors due to reliance on the CPT codes listed in this Test Directory. Charges may vary due to reflexing, susceptibilities, specimen source, patient age, methodology requirements, etc..

Patient Price Inquiries

Requester Contact Information
Patient and UMP/FV Care Team Fairview Consumer Line at 612-672-1048
MRL Outreach Client dept-mrl-business-assessment@fairview.org
Research research@fairview.org

CPT Codes

CPTQtyHC HospitalPR ClinicNote
82950130082950028295001HC GLUCOSE POST DOSE
82950130082950028295001HC GLUCOSE POST DOSE

Methodology

Bichromatic endpoint, glucose oxidase


Woodwinds: Hexokinase


Clinics (Hemocue): whole blood assay with erythrocyte hemolysis and glucose oxidation. Dual wavelength photometric quantification to report a plasma equivalent value.

Interface Mapping

MRL Test Build

Test Name Component Required Description Type LOINC
LAB3503     Glucose Tolerance Gestational Screen (1 Hour) Orderable  
  SRC_1001 Y Blood specimen source: Prompt  
  1230003137   Patient Fasting > 8hrs? Result  
  1230004467   Gluose Gest Screen 1hr 50g Result 1504-0

Data Type / Multiple Choice Response

SRC_1001
Blood specimen source:
Arm, Left|Arm, Right|Hand, Left|Hand, Right|Blood, Capillary|Other|Peripheral Blood
Default: Peripheral Blood

Contact

For questions regarding the test code Interface Map, please contact DEPT-LAB-CLIENT-INTERFACE@fairview.org
Private Details

Test Detail

Processing Key


See Processing Key "Special" Definitions document for *SPECIAL* definition.
Abbreviation
GLU1
Performing Lab
Clinics, CSC Maple Grove, CSC Mpls, Grand Itasca, Lakes, Northland, Range, Ridges, Southdale, St. John's, UMMC East Bank, UMMC West Bank, Woodwinds
Department
Chemistry
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