Antibody Identification, Titer and Typing, RBC (ABIDTI)

Test Code

Quest Code

CPT Codes
86870 (x # of panel(s) performed), 86886 (x # of titer(s) performed), 86905 (x # of antigen typing(s) performed)


Based on reactions presenting from Antibody Identification, then 36668 - Direct Antiglobulin Test (DAT) with Reflex to Anti-C3 and Anti-IgG may be performed at an additional charge (CPT code(s): 86880).

If 36668 - Direct Antiglobulin Test (DAT) is positive, then %36669 - Anti-C3 and Anti-IgG will be performed at an additional charge (CPT code(s): 86880 x2).

Preferred Specimen
5 mL whole blood collected in an ACD-A or ACD-B (yellow-top) tube

Minimum Volume
1 mL

Other Acceptable Specimens
Red-top tube (no gel) • EDTA (pink-top) tube • Cord blood • EDTA (lavender-top) tube
Note: If submitted with a CBC, HbA1c or any other test requiring an EDTA (lavender-top) tube, please submit a separate tube for this test

Transport Container
ACD-A or ACD-B (yellow-top) tube

Transport Temperature

Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: Unacceptable

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Serum Separator Tube (SST®)

Immune Agglutination

Setup Schedule
Cut-off: 9am; Exp release as necessary for identification Monday, tuesday, wednesday, thursday and friday

Report Available
3 days

"Private" antigens may not be represented on the testing panel and low antigen levels may be undetected.

Reference Range
See Laboratory Report

Clinical Significance
Antibody identification is needed to assess the risk of hemolytic disease of the newborn and to identify sensitized persons at risk in the setting of future transfusions.

Performing Laboratory
Quest Diagnostics - South Region

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.