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HelpTest Code ABT Antibody Titer,Prenatal,Blood
Additional Codes
LAB275
Specimen Required
| Patient Preparation: |
|
| Container Type: |
Optimal: Pink Top (EDTA) Acceptable: Lavender
|
| Optimal Collection Volume: |
6mL whole blood |
| Collection Instructions: |
Collect specimen and gently invert several times to mix. Label the specimen, in the presence of the patient, with full name, date of birth and patient medical record number. |
| Processing Instructions: |
1. Collect sample in pink top container. 2. Label per policy in the presence of the patient. 3. Send whole blood sample to Blood Bank for testing. |
Useful For
Monitoring alloantibody levels in sensitized pregnant women for management of Hemolytic Disease of the Fetus and Newborn (HDFN). Generally repeated at intervals throughout a pregnancy to monitor for significant increases.
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| %AS | Antibody Screen | Yes (ASC) | YEs |
| %ABI | Antibody ID | No | No |
Method Name
Gel
Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Refrigerated | 3 days | |
| Ambient | 1 days |
Rejection Due To
| Hemolysis | Mild OK; Moderate OK; Gross Reject |
| Lipemia | Mild OK; Moderate OK; Gross Reject |
| Icterus | Mild OK; Moderate OK; Gross Reject |
| Other | N/A |
Post Processing Specimen Type
Whole Blood
Specimen Minimum Volume
Collecting minimum volumes can result in a need for sample recollection, and/or a delay in results. Minimum volumes are subjective and cannot account for all aspects of specimen and testing needs. Refer to the Specimen Required section for optimal volumes for laboratory specimens. Contact the Bronson Laboratory if complex collection exceptions occur that require more information.
| Minimum Volume: | 1.0mL whole blood |
Performing Laboratory
Bronson Laboratory, Blood Bank - Kalamazoo
Day(s) Performed
Monday through Friday
Reference Values
Coombs (antiglobulin) titer ranges vary with the clinically significant antibody being titered, but generally ≥1:16 is considered indicative for further evaluation and intervention. Current specimens are run concurrently with the most recent previous specimen (when availble) to assist in determining if a true increase in alloantibody titer has occurred.
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ABT | Antibody Titer | 15343-7 |
| ASC | Antibody Screen | 75263-4 |
CPT Code Information
| Test ID | Test Order Name | CPT Code |
|---|---|---|
| ABT | Antiody Titer | 86886 |
| ASC | Antibody Screen | 86850 |
| %ABI | Antibody Identification | 86870 |
Sample Retention Time
Blood Bank specimens (other than Cord Blood) are retained in the Blood Bank for 30 days. Pretransfusion testing should be completed on specemins wtihin 2 days of collection.