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22971 Obstetrics Panel

Obstetrics Panel
Test Code: OBPANOR
Synonyms/Keywords
​OB Panel - Used for Outreach Accounts ordering the OB 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.
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.  2 peripheral 
     blood smears are also required.
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.
- Blood smears must be prepared within two hours of collection.  Label with computer generated label or use
  pencil   to label with patients full name and date. Store slides at room temperature.
 
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
Hemolyzed specimens​
Frozen specimens​
Samples from serum-separator tubes​
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​ ​ ​ ​ ​ ​ ABO AND Rh factor: ​Monday through Sunday ​​Less than 2 hours ​Serological
​Antibody Screen: Monday through Sunday ​Less than 2 hours ​​Gel Technology
​Syphilis Antibody IgG: Monday through Friday 1 day ​MultiPlex Flow Immunoassay/Bio-Rad BioPlex 2200
​Rubella Antibody: Monday through Sunday ​Less than 2 hours ​Paramagnetic 2 Step Sandwich Assay (Beckman-Coulter)
​Hepatitis B Surface Antigen: Monday through Friday ​1 day ​Chemiluminescent (Siemens Advia Centaur)
​CBC with automated differential: Monday through Sunday ​Less than 2 hours ​Beckman DxH800 with light microscopy
Reference Range Information
Performing Location Reference Range
​Marshfield ​See individual test listings for reference ranges
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
86780​ ​ ​ ​Syphilis, treponemal ​
85025​ ​ ​ ​CBC with auto diff ​
87340​ ​ ​ ​Hepatitis B Surface Antigen ​
86762​ ​ ​ ​Rubella Ab ​
86850​ ​ ​ ​Antibody screen ​
86900​ ​ ​ ​ABO ​
86901​ ​ ​ ​RH ​
86593​ ​ ​ ​Syphilis confirmation (if needed) ​
Synonyms/Keywords
​OB Panel - Used for Outreach Accounts ordering the OB 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
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.  2 peripheral 
     blood smears are also required.
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.
- Blood smears must be prepared within two hours of collection.  Label with computer generated label or use
  pencil   to label with patients full name and date. Store slides at room temperature.
 
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
Hemolyzed specimens​
Frozen specimens​
Samples from serum-separator tubes​
Interference
​High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay (HAA).
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​ ​ ​ ​ ​ ​ ABO AND Rh factor: ​Monday through Sunday ​​Less than 2 hours ​Serological
​Antibody Screen: Monday through Sunday ​Less than 2 hours ​​Gel Technology
​Syphilis Antibody IgG: Monday through Friday 1 day ​MultiPlex Flow Immunoassay/Bio-Rad BioPlex 2200
​Rubella Antibody: Monday through Sunday ​Less than 2 hours ​Paramagnetic 2 Step Sandwich Assay (Beckman-Coulter)
​Hepatitis B Surface Antigen: Monday through Friday ​1 day ​Chemiluminescent (Siemens Advia Centaur)
​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
86780​ ​ ​ ​Syphilis, treponemal ​
85025​ ​ ​ ​CBC with auto diff ​
87340​ ​ ​ ​Hepatitis B Surface Antigen ​
86762​ ​ ​ ​Rubella Ab ​
86850​ ​ ​ ​Antibody screen ​
86900​ ​ ​ ​ABO ​
86901​ ​ ​ ​RH ​
86593​ ​ ​ ​Syphilis confirmation (if needed) ​
For most current information refer to the Marshfield Laboratory online reference manual.