AABB immunohematology reference laboratory (IRL) accreditation is AABB's accreditation of laboratories that perform advanced serology testing and reference services, assessed against the AABB Standards for Immunohematology Reference Laboratories, 14th edition, effective April 1, 2026. It is for reference laboratories that support complex blood compatibility work. Integral Healthcare Solutions (IHS) drafts the referral, records and quality procedures for AABB reference lab accreditation; your scientists own testing.

Last reviewed: October 2026.

What is AABB IRL accreditation?

AABB states that it "uses the standards described in Standards for Immunohematology Reference Laboratories as a basis for accrediting laboratories for advanced serology testing and reference lab services." The standards outline "requirements for highly specialized laboratories that provide an essential service to patients who have specific serologic complexities and/or need rare blood components" (AABB, IRL Standards).

The governing texts:

• AABB Standards for Immunohematology Reference Laboratories, 14th edition, effective April 1, 2026. AABB gives the revision cycle as "24 months (April of even numbered years)."
• The AABB Accreditation Activities list, Version 3, effective 4/2/2026, which defines the activity: "Immunohematology Reference Laboratory (IRL) Activity – A facility equipped for performing advanced investigational procedures pertaining to immunohematologic studies."
• The AABB Accreditation Process, which sets out the self-assessment and on-site assessment phases.

AABB describes the service these laboratories provide: "Immunohematology Reference Laboratories provide an exchange of information and consultation on rare blood group antibodies, grouping, component preparation and therapy, blood compatibility testing and research" (AABB).

Who needs it and what triggers it

The IRL Activity fits a facility that performs advanced investigational immunohematology work, as defined above. Blood centers can hold it alongside other activities: AABB lists "Donor Activity", "Donor Testing Only Activity", "Immunohematology Reference Laboratory (IRL) Activity" and "Molecular Testing Activity" for blood centers (AABB, Blood Collection).

The events that usually start the work:

• A first application, or adding the IRL Activity to an existing AABB accreditation. AABB states that "There are two phases involved with achieving AABB accreditation for the first time or adding a new activity: the self-assessment phase, followed by the on-site assessment phase" (AABB).
• The two-year cycle. AABB states: "Once a facility becomes AABB-accredited, it must go through the accreditation process (on-site assessment phase) every two years."
• A new edition. The 14th edition took effect April 1, 2026, and procedures written to the prior edition need checking against it.
• A CLIA decision. AABB marks the IRL Activity with "*AABB can be the CLIA provider for facilities accredited in these activities" (AABB).

Timing: "The majority of facilities complete both the initial self-assessment phase and the on-site assessment phase in 1 – 2 years and achieve AABB accreditation." A facility "must be in operation for a minimum of 6 months (in the desired accreditation activity) before the initial accreditation process can begin" (AABB).

How IHS helps

IHS works from your laboratory's copy of the AABB IRL Standards. AABB's expectation is that "all standards are addressed in policies, processes and procedures (PPPs), and that PPPs are followed as written" (AABB). The process is built around that:

1. Gap assessment. IHS reviews your policies, processes and procedures against the 14th edition and lists what is missing or out of date.
2. Questionnaires. Short questionnaires on methods, referral intake and result communication show how the work runs today.
3. Document and evidence mapping. IHS builds a crosswalk from each standard to the procedure and record that shows it, which also supports your APEX self-assessment.
4. Drafting. IHS drafts referral and result-communication procedures, quality records and staff evidence controls. Technical content is drafted for your scientists and laboratory director to review and approve.
5. Mock review. Before AABB's on-site assessment, IHS reviews your procedures and records the way an assessor reads them.

What your laboratory supplies: the standards, your SOPs, and specialist scientists who own testing and interpretation. Your laboratory applies to AABB and completes the APEX self-assessment.

The limit: serological testing and interpretation are specialist technical work that IHS does not review.

What to have ready

Each item ties to the AABB IRL Standards, 14th edition (effective April 1, 2026) or the AABB Accreditation Process.

1. Your laboratory's copy of the 14th edition IRL Standards.
2. A dated record showing at least six months of operation in the IRL Activity, since AABB requires "a minimum of 6 months" before the initial process can begin.
3. A list of the advanced investigational procedures you perform, set against the IRL Activity definition.
4. Any other AABB activities you hold or plan to add, such as Donor, Molecular Testing or Transfusion.
5. Your policies, processes and procedures, indexed, so each standard can be traced to a PPP.
6. Evidence that PPPs are "followed as written": completed records drawn from day-to-day work.
7. Referral intake and result-communication procedures and their records, since AABB describes IRLs as providing "an exchange of information and consultation" on rare antibodies and compatibility.
8. Your decision on whether AABB will be your CLIA provider for the IRL Activity.
9. Access to APEX, AABB's online accreditation portal, where the self-assessment is completed.

The introductory call is the place to walk through this list for your laboratory.

How it compares

A reference serology laboratory has more than one route. This table describes them; it does not say which fits your laboratory.

What it costs

AABB publishes its institutional dues and fees. From the 2026 AABB Institutional Dues Fees (dated 10.01.2025):

• "Annual institutional membership dues include basic membership, volume fee and an accreditation activity fee, which is based upon your primary business focus."
• Basic Membership, Accredited Institutions: $1,714.
• Application Fee (new members only): $1,740.
• IRL Activity Accreditation: $2,064.
• IRL Proficiency Testing: $1,463.
• IRL volume fee, charged on the number of samples per year, starting at $146 for 1 to 5,000 samples.
• "Additional fees may apply if activities are performed at multiple sites."

The standards themselves: the 14th edition portal version lists at $219.00, or $152.00 for members (AABB, Purchase Standards). These are AABB's published dues and fees, not a total cost. The same AABB fee document lists a travel fee of $1,568 per year for non-U.S. locations (excluding Canada), notes that additional fees may apply for multi-site activities, and does not itemize other assessor charges. Verify current fees with AABB.

IHS scopes each engagement after a free introductory call.

What this is not

• IHS is not an accrediting body and does not grant, influence or predict an AABB decision.
• IHS does not apply to AABB, complete the APEX self-assessment or correspond with AABB on your behalf. IHS drafts; your laboratory submits.
• IHS does not review serological testing, antibody identification or result interpretation.

Frequently asked questions

What is AABB immunohematology reference laboratory accreditation?

It is AABB's accreditation of laboratories for advanced serology testing and reference lab services, based on the AABB Standards for Immunohematology Reference Laboratories. The current edition is the 14th, effective April 1, 2026.

What changed in the 14th edition of the IRL Standards, effective April 1, 2026?

AABB's standards page gives the edition, the April 1, 2026 effective date and the 24-month revision cycle, but does not summarize the changes. Your laboratory's copy of the 14th edition is the source. IHS runs its gap assessment against the edition in force.

Which labs qualify for the IRL Activity versus the Transfusion Activity?

AABB defines the IRL Activity as a facility equipped for performing advanced investigational procedures pertaining to immunohematologic studies. The Transfusion Activity covers compatibility testing, storage, selection and issuing of blood and components to intended recipients. The activity follows the work the laboratory performs.

How long does IRL accreditation take?

AABB states that the majority of facilities complete the self-assessment and on-site assessment phases in 1 to 2 years. A facility must operate in the activity for at least 6 months before the initial process can begin, and accredited facilities repeat the on-site assessment every two years.

What do AABB IRL accreditation and proficiency testing cost?

AABB's 2026 fee schedule lists IRL Activity Accreditation at $2,064 and IRL Proficiency Testing at $1,463, plus basic membership of $1,714, a $1,740 application fee for new members and a volume fee based on samples per year. Additional fees may apply for multiple sites. Verify current fees with AABB.

Can AABB act as our CLIA accreditor for IRL work?

AABB marks the IRL Activity as one for which AABB can be the CLIA provider for accredited facilities. Whether to use AABB or another route is your laboratory's decision.

What referral, result-communication and rare-donor inventory records do assessors expect?

AABB expects all standards to be addressed in policies, processes and procedures, and those procedures to be followed as written. The specific record requirements are in your copy of the IRL Standards. IHS maps each standard to the procedure and record that shows it and drafts the referral and result-communication procedures your laboratory approves.

AABB IRL accreditation versus CAP accreditation for a reference serology lab?

AABB accredits the IRL Activity against its IRL Standards and can be the CLIA provider for it. CAP's Laboratory Accreditation Program holds CMS deeming authority, which allows a CAP inspection in lieu of a CMS inspection. The choice belongs to your laboratory.

What does adding the IRL Activity to existing AABB accreditation involve?

AABB states that adding a new activity goes through the same two phases as a first accreditation: self-assessment, then on-site assessment. The laboratory must have operated in the IRL Activity for at least 6 months before the process begins.