Specialty Programs

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Two specimens per testing event, 1.0 mL

Two sets of samples are intended for multiple-site assessment of WB Glucose; up to 20 sets of WB Glucose values, in any combination of different operators and/or methods. However each line of results reported must be derived from the same method for all specimens.

The samples uses special additives which mimics whole blood without the interferences found in hemolysate of fixed RBC based products. Allow the vials to stand for 15 minutes at room temperature (15-30 °C).  Mix vial gently by rolling between the palms of the hands for 20 seconds.  Gently invert 2 -3 times then repeat the rolling for 20 more seconds. Assay the specimens for glucose using the same procedures that you would use for patient fingerstick specimens.


Six fresh serum specimens per testing event, 3 mL

Certification of clinical laboratories is based on a direct comparison of their measurements of fresh patient samples with measurements obtained with the Abell-Kendall reference method.  Email techsupport@aab-pts.org for ship dates.

Receipt and Storage

Upon receipt, examine contents for completeness and for any damage or leakage.  There should be one set of 6 samples (3 mL each).  

Specimen Analysis


Three liquid serum samples per testing event, 1 mL

Storage and Stability

Sample Handling

  1. Invert the sample gently several times to assure homogeneity of contents – avoid foaming.
  2. Pipette the required volume of sample for testing. Re-cap and refrigerate the remaining sample.
  3. Allow the aliquot of sample to equilibrate to room temperature (18-30°C / 64-86°F) before analysis. The sample must be analyzed in the same manner as a patient specimen.

Code the reagent and instrument used by entering the appropriate codes from the Master lists provided


Since 2014 it has been a point of emphasis with CMS that proficiency (PT) samples must not be run multiple times during an event unless this followed the laboratory’s routine practice for handling patient samples.  It was particularly noted that this included using PT samples to compare multiple instruments or methods within a laboratory to in an effort to comply with CLIA requirements.  The Method Comparison program is designed to allow laboratories to utilize PT samples to help meet those requirements without violating the CMS ruling that you cannot test PT samples multiple times during an active proficiency testing event.

This program will consist of three validated samples shipped separately from your regular proficiency testing event.  Depending on the analyte, you will be prompted to enter results from your main and comparison methods, and potentially peer methods from the matching PT event.  Our proprietary program will walk you through the data entry, evaluate your data and provide a concise report for your laboratory director or consultant’s review and signature.  Saving a copy of this report, your director’s signed review and any required documented remedial activities, you will be able to satisfy CLIA’s comparison requirements.

The data entry and reduction will be handled through our AAB-PTS.ORG website.  So you must have access to the internet and a current valid password for your account in order to use this program.  Individual program sample handling and testing instructions can be found under the regular program listing in this guide.