Test Code LAB1902 Baby Type and Screen
Useful For
Preliminary testing for neonatal transfusions. Because the immunologic system of the newborn is immature and relatively unresponsive to antigenic stimulation during the first four months of life, standards for compatibility testing are different. Antibody screens in neonates (indirect Coombs) are performed with the mother's serum to screen compatible blood for transfusion of a neonate. Testing also requires a banded specimen from the neonates mother to complete testing.
Methodology
Capture solid phase automation and manual blood banking methods
Profile Information
Test Code | Test Name | Always Performed |
---|---|---|
LAB280 | Baby ABO and Rh Type | Yes |
LAB278 | Antibody Screen (Indirect Coombs), Blood | Yes, on maternal serum |
LAB274 | Direct Coombs | Yes |
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Note: Both a banded specimen from the mother and newborn is required.
Specimen Type: Cord blood or whole blood (Newborn)
Container/Tube: Pink top preferred (K2 EDTA), Purple top, or Cord Blood red top
Specimen Volume: Full tube
Specimen Minimum Pediatric Volume: 1 full, lavender-top (EDTA) Microtainer
Collection Instructions:
1. Do not centrifuge. Forward unprocessed whole blood promptly.
2. Label specimen as follows prior to leaving patient’s side. Using a computer-generated hospital label, or ballpoint pen (press firmly), fill out Blood Bank identification band as follows:
a. Patient’s full name
b. Patient’s date of birth
c. Date and time of draw
d. Phlebotomist’s initials
3. Place 1 label on “Patient Information Here” part of wristband. Remove backing and seal with clear tape.
4. Attach wristband to patient.
5. Remove label from wristband at “Place Label on Tube Lengthwise” and attach to tube. Place second patient label over wristband label, leaving barcode and number visible.
6. Detach barcode stickers from wristband. Remove backs of yellow tabs and attach to tube. Forward promptly.
Specimen Rejection: Gel tube
Specimen Type: Whole blood (Mother)
Container/Tube: Pink top preferred (K2 EDTA), or Purple top
Specimen Volume: 6 mL
Collection Instructions: Patient and specimen must be banded. Do not centrifuge. Forward unprocessed whole blood promptly.
Additional Information:
1. Specimen being drawn may result in a possible transfusion. Patient must be wearing an identification bracelet. Blood Bank identification band must be completed and placed on patient’s wrist at time of specimen draw. If the patitent has no historical blood type at Bozeman Deaconess Hospital, a second draw by a second phlebotomist may be required for transfusion.
2. Identify patient by asking them to state their name. If patient cannot identify himself or herself, find someone who can positively identify patient.
3. Label specimen as follows prior to leaving patient’s side. Using a computer-generated hospital label, or ballpoint pen (press firmly), fill out Blood Bank identification band as follows:
a. Patient’s full name
b. Patient’s date of birth
c. Date and time of draw
d. Phlebotomist’s initials
4. Place 1 label on “Patient Information Here” part of wristband. Remove backing and seal with clear tape.
5. Attach wristband to patient.
6. Remove label from wristband at “Place Label on Tube Lengthwise” and attach to tube. Place second patient label over wristband label, leaving barcode and number visible.
7. Detach barcode stickers from wristband. Remove backs of yellow tabs and attach to tube. Forward promptly.
8. If specimen is spun down, label vial as plasma or serum and send along with RBCs in original tube.
Specimen Rejection: Gel tube
Specimen Transport Temperature
Ambient <24 hours/Refrigerated >24 hours
Specimen Stability
Specimen Type | Temperature | Time |
---|---|---|
Whole Blood EDTA | Ambient | 24 hours |
Refrigerated | 4 days |
Reference Values
Type: A, B, O, AB, A2
Rh: Positive or Negative
Screen: Negative
DAT: Negative
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
86900-ABO
86901-Rh type
86850-Antibody screen
86870-Antibody identification (if appropriate)
86880-Antiglobulin (direct Coombs) (if appropriate)
86905-Each red cell antigen typing (if appropriate)
86923-Electronic crossmatch
86945-Irradiation of blood product (each unit)