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22908 Obstetric Panel

Obstetric Panel
Test Code: OBPAN
Synonyms/Keywords
​Prenatal panel
Test Components
​Panel includes a CBC with automated differential, Blood typing (ABO and Rh factor), Antibody Screen, Syphilis IgG Antibody, Rubella Antibody and Hepatitis B Surface Antigen.
Useful For
​Screening to identify the presence of disease and aid in diagnosis.
Specimen Requirements
See Collection and Processing Instructions section for Specimen Requirements
Collection Processing Instructions
This test requires three samples:
 
1.  6.0 mL whole blood – Pink Top Tube (PTT) used for ABO, Rh factor and Antibody Screen.
2.  3.0 mL whole blood – EDTA Lavender Top Tube (LTT) used for CBC with automated differential.  
3.  3.0 mL serum – Red Top Tube (RTT) used for Syphilis Antibody IgG, Rubella Antibody and Hepatitis B 
     Surface Antigen.
 
Processing instructions:
 
-Samples collected in a (RTT) must be removed from the cells within one hour for storage or transport.
-Regional Centers: Hemogram to be performed at local site; other tests to be sent to Marshfield Campus.
 
High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay (HAA). It is recommended that patients refrain from consuming any multivitamin or supplement containing biotin for at least 72 hours prior to collection of a blood sample.
Specimen Stability Information
Specimen Type Temperature Time
​Whole blood ​Refrigerate ​<48 hours
​Serum ​Refrigerate ​4 days
Rejection Criteria
Gross hemolysis
​Frozen specimens
​Clotted specimens
IV or tissue fluid diluted specimens ​
Interference
​High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay (HAA).
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​-Transfusion Services ​ABO and Rh factor: Monday through Sunday ​Less than 2 hours ​Serological
​Marshfield​-Transfusion Services ​Antibody Screen: Monday through Sunday ​Less than 2 hours ​Gel Technology
​Marshfield-Clinical Esoteric Automated ​Syphilis Antibody IgG: Monday through Friday ​1 day ​MultiPlex Flow Immunoassay/Bio-Rad BioPlex 2200
​Marshfield-Clinical Esoteric Automated ​Rubella Antibody: Monday through Sunday ​Less than 2 hours ​Paramagnetic Two Step Sandwich Assay/Beckman-Coulter
​Marshfield-Clinical Automated ​Hepatitis B Surface Antigen: Monday through Friday ​1 day ​Chemiluminescent/Siemens Advia Centaur
​Marshfield-Clinical Automated ​CBC with Automated Differential: Monday through Sunday ​Less than 2 hours ​Beckman DxH800 with Light Microscopy
Test Information
​Results of all tests are only reported upon completion of the entire panel
Reference Range Information
Performing Location Reference Range
​Marshfield

​See individual test listings for reference ranges

Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
85025​ ​ ​ ​CBC with auto diff ​
​87340 ​ ​ ​Hepatitis B Surface Antigen ​
86762 ​ ​ ​ ​Rubella Ab ​
86850 ​ ​ ​ ​Antibody screen ​
​86900 ​ ​ ​ABO ​
​86901 ​ ​ ​RH ​
86780​ ​ ​1 ​Syphilis, treponemal ​
​86593 ​ ​1 ​RPR (if needed) ​
86780 ​ ​ ​1 TP-PA (if needed) ​
Synonyms/Keywords
​Prenatal panel
Test Components
​Panel includes a CBC with automated differential, Blood typing (ABO and Rh factor), Antibody Screen, Syphilis IgG Antibody, Rubella Antibody and Hepatitis B Surface Antigen.
Ordering Applications
Ordering Application Description
​Centricity ​OB Panel
​Cerner ​OB Panel
​COM ​OB Panel
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
See Collection and Processing Instructions section for Specimen Requirements
Collection Processing
This test requires three samples:
 
1.  6.0 mL whole blood – Pink Top Tube (PTT) used for ABO, Rh factor and Antibody Screen.
2.  3.0 mL whole blood – EDTA Lavender Top Tube (LTT) used for CBC with automated differential.  
3.  3.0 mL serum – Red Top Tube (RTT) used for Syphilis Antibody IgG, Rubella Antibody and Hepatitis B 
     Surface Antigen.
 
Processing instructions:
 
-Samples collected in a (RTT) must be removed from the cells within one hour for storage or transport.
-Regional Centers: Hemogram to be performed at local site; other tests to be sent to Marshfield Campus.
 
High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay (HAA). It is recommended that patients refrain from consuming any multivitamin or supplement containing biotin for at least 72 hours prior to collection of a blood sample.
Specimen Stability Information
Specimen Type Temperature Time
​Whole blood ​Refrigerate ​<48 hours
​Serum ​Refrigerate ​4 days
Rejection Criteria
Gross hemolysis
​Frozen specimens
​Clotted specimens
IV or tissue fluid diluted specimens ​
Interference
​High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay (HAA).
Useful For
​Screening to identify the presence of disease and aid in diagnosis.
Test Components
​Panel includes a CBC with automated differential, Blood typing (ABO and Rh factor), Antibody Screen, Syphilis IgG Antibody, Rubella Antibody and Hepatitis B Surface Antigen.
Reference Range Information
Performing Location Reference Range
​Marshfield

​See individual test listings for reference ranges

For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​-Transfusion Services ​ABO and Rh factor: Monday through Sunday ​Less than 2 hours ​Serological
​Marshfield​-Transfusion Services ​Antibody Screen: Monday through Sunday ​Less than 2 hours ​Gel Technology
​Marshfield-Clinical Esoteric Automated ​Syphilis Antibody IgG: Monday through Friday ​1 day ​MultiPlex Flow Immunoassay/Bio-Rad BioPlex 2200
​Marshfield-Clinical Esoteric Automated ​Rubella Antibody: Monday through Sunday ​Less than 2 hours ​Paramagnetic Two Step Sandwich Assay/Beckman-Coulter
​Marshfield-Clinical Automated ​Hepatitis B Surface Antigen: Monday through Friday ​1 day ​Chemiluminescent/Siemens Advia Centaur
​Marshfield-Clinical Automated ​CBC with Automated Differential: Monday through Sunday ​Less than 2 hours ​Beckman DxH800 with Light Microscopy
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
85025​ ​ ​ ​CBC with auto diff ​
​87340 ​ ​ ​Hepatitis B Surface Antigen ​
86762 ​ ​ ​ ​Rubella Ab ​
86850 ​ ​ ​ ​Antibody screen ​
​86900 ​ ​ ​ABO ​
​86901 ​ ​ ​RH ​
86780​ ​ ​1 ​Syphilis, treponemal ​
​86593 ​ ​1 ​RPR (if needed) ​
86780 ​ ​ ​1 TP-PA (if needed) ​
For most current information refer to the Marshfield Laboratory online reference manual.