Randox International Quality Assessment Scheme (RIQAS)

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Randox International Quality Assessment Scheme (RIQAS)

RIQAS is the world’s largest External Quality Assessment scheme with more than 75,000 laboratory participants spanning over 138 countries.

Key Benefits of RIQAS


Cost Effective

Consolidate EQA analysis, reduce workload and costs with our comprehensive, multi-parameter programmes.


Flexible Programme Options

Flexible programme options are available to suit all laboratory budgets. The option to register up to five instruments per programme (volume permitting) at no extra cost for comparative performance assessment

Highly Accredited


RIQAS is accredited to ISO/IEC 17043:2010 “Conformity Assessment – General Requirements for Proficiency Testing” which is accepted by national and international accreditation bodies. Please see accreditation schedule for additional information.


Expansive Peer Group Database

The availability of large peer groups ensures robust data is available for a wide range of instruments and methods.


Rapid, User-Friendly Reports

Our rapid, user-friendly reports allow at-a-glance performance assessment. Complimentary multi-instrument, inter-laboratory and end-of-cycle reports are also available.


Commutable Samples

A commutable sample matrix increases confidence that performance mimics that of patient samples.


Early Identification of Test System Errors

Frequent reporting allows early identification of test system errors, while our 72 hour report turnaround enables corrective action to be taken with minimum disruption to the lab.


Convenient Data Upload System

RIQAS.net is a convenient, web-based data entry system which allows participants to return results and view reports online.


High Quality Samples

EQA samples are manufactured to the highest quality standard and span clinically relevant levels.

RIQAS EQA Programmes

Choice & flexibility are guaranteed with our 36 programme portfolio.

Browse the programmes below



User-friendly, one-page per parameter reports allow for at-a-glance performance assessment.

Browse the reports below.

What Does RIQAS Provide?

The benefits of Randox Riqas as an external quality assessment

RIQAS Calendar 2024

What the Participants say:

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RIQAS Brochure

RIQAS Parameters


RIQAS Calendar

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RIQAS Past Panels

RIQAS (Randox International Quality Assessment Scheme) is the largest global EQA scheme with over 50,000 participants in more than 139 countries. Our range currently comprises 36 programmes and the majority of clinical testing.

What are RIQAS Past Panels?

Stemming from RIQAS, the world’s largest External Quality Assessment programme, RIQAS Past Panels* facilitate a series of QC and interlaboratory functions, including:


Method Validation

New Instrument Validation

Assay Evaluation

Poor Performance Troubleshooting

Staff Training

Available Panels

Available RIQAS Past Panels* include:

• Ammonia/ Ethanol
• Anti-Müllerian Hormone (AMH)
• Anti-TSH Receptor
Blood Gas
• Cardiac
• Cardiac Plus
Cerebrospinal Fluid (CSF)
• Coagulation
• CO-Oximetry
• CYFRA 21-1
• General Clinical Chemistry
• Glycated Haemoglobin (HbA1c)
• Haematology
• Human Urine
• Immunoassay
• Immunoassay Speciality 1
• Immunoassay Speciality 2
• Immunosuppressant
• Lipid
• Maternal Screening
• Microbiology (Bacterial Identification)
• Neonatal Bilirubin
Serology (Anti-SARS-CoV-2)
Serology (EBV)
• Serology (HIV/ Hepatitis)
Serology (Syphilis)
Serology (ToRCH)
Serum Indices
Specific Proteins
Sweat Testing
• Therapeutic Drugs
• Urinalysis 
• Urine Toxicology
*Product availability is dependent on RIQAS stock surplus levels.

Benefits of RIQAS Past Panels

Support Data Included

All RIQAS Past Panels are provided with an Excel document containing supporting data for the instrument and method of interest.

Multi Level Samples

RIQAS Past Panel samples span multiple levels, making them ideal for ensuring accurate instrument performance across the measuring range.

Comprehensive Reports

RIQAS Past Panels allow laboratories to receive comprehensive external QC reports even after program close.

For more information on RIQAS Past Panel availability or to take part in this EQA scheme, contact us today and speak to one of our friendly and knowledgeable sales representatives. 

RIQAS Serology Report

The Serology report is available within ten days of the final submission date. The results for each parameter are displayed on a single page report. There are two types of Serology report – one for qualitative reporting and one for quantitative reporting. Each of these report ensure quick and easy performance assessment.


The Qualitative report comprises three subsections including a text section, Histogram and method summary. The text section conveniently displays your laboratory’s result to the correct result for your method. The Histogram visually displays your laboratory’s result in relation to all of the results submitted for your method group and the all method group. Finally, the method summary provides a breakdown of the results for all methods registered with RIQAS.

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The Quantitative report comprises four subsections including a text section, Histogram, Levey-Jennings chart and method summary. The text section conveniently displays your laboratory’s result to the mean for comparison, the histogram visually displays your laboratory’s result to the mean for comparison, the Levey-Jennings chart displays the SD for the last 20 samples ensuring instant identification of performance over time and finally the method summary provides a breakdown of the results submitted for all methods registered with RIQAS.

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RIQAS Urinalysis Report

RIQAS Urinalysis reports have been designed specifically for participants of the RIQAS Urinalysis programme (RQ9138). Report features include;

  • Scoring system
  • Ability to rate performance and visualise historical performance data
  • Visual representation of performance
  • Peer group comparison levels

To find out more on the range of features available with the report, see the table below.


The Urinalysis Report scoring system, scores participants based on a spread of results over each category and how far a participant is away from the consensus, which is referred to as the Target Category.

The score calculated is based on how close to the target category a participant’s result falls. A score of 0 refers to a result which falls within the target category and therefore, the comment “acceptable” will be given. A laboratory’s performance is described as being acceptable or unacceptable based on this calculated score.

A laboratory must achieve a score of between -6 and +6 for their performance to be deemed acceptable. Scores can fall between the values of -10 and +8.

  1. If a participant’s result matches the target category then they will receive the score of 0 and the comment “acceptable” given.
  2. Where a participant returns a negative result and the target category is positive (category 9), the participant score will be -10. The comment “unacceptable” will be given.
  3. Where a participant returns a positive result (category 9) and the target category is negative, the participant score will be +8 and the comment “unacceptable” given.

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Current Sample

The score achieved for the current reported sample together with the associated comment of acceptable, unacceptable or borderline will be listed in the comments box located towards the top of the results page for each registered parameter. The percentage (%) of results from the selected peer group which fall within the target category are also stated.

Potential Historical Information

The number of correct scores (i.e. scores of 0) that have been submitted in the last “n” samples, up to a maximum of 6 previous samples. The number of acceptable assessments that have been submitted in the last “n” samples, up to a maximum of 6 previous samples.

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Charting of Current & Historical Information

Results of scoring for each sample are displayed on a Levey-Jennings style chart with “0” score in the middle and scoring categories positioned on either side for 2, 4, 6, 8 and 10. The chart is shaded into bands depending on the scores.

Acceptable scores (0-6) have no shading, Borderline scores (6-8) have light red shading and unacceptable scores (8-10) are shaded a darker red.

Scores for each of the last 12 samples are plotted against the appropriate sample number and the chart also indicates whether the participant’s reported result category is higher or lower than the target category.

The target categories are stated along the top of the chart and if there are no target categories due to a lack of numbers then an “X” is plotted to show that a result has been submitted but could not be scored.

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Reporting – Summary Page

The summary page at the end of the report lists all of the parameters that a participant has registered for.

For each parameter the following information is stated:

  1. Target Category, which is dependent on the unit registered
  2. The result which has returned by the participant
  3. The score achieved for the current sample
  4. The comment of Acceptable / Unacceptable / Borderline
  5. Where the comment is “Unacceptable” it is highlighted in bold italics and underlined
  6. The number of “Acceptable” assessments that have been achieved over the previous 6 samples

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RIQAS Urine Toxicology Report

A dedicated report is provided for the Urine Toxicology programme. The report is divided into two subsections; the screening (qualitative) and the quantitative section, allowing for visual performance assessment at-a-glance.


Your laboratory’s result is displayed along with the correct response. A visual chart is also provided displaying performance of the last 20 samples. A breakdown of the screening results submitted by other laboratories in your method group and all method groups for the current sample is also provided at a variety of cut-offs. A further breakdown is provided for various methods at your specific cut-off.

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The Quantitative section of the Urine Toxicology report is further broken down into a text section comparing your laboratory’s performance to the mean for comparison, a Histogram chart indicating your laboratory’s performance in relation to the method group and the all method group and a multi-method section highlighting the performance of other methods.

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RIQAS Instrument Group Report

All RIQAS participants are entitled to register up to five separate instruments per programme at no extra cost.

Individual reports for each instrument are supplied as normal in addition to a complimentary instrument group report allowing the performance of each instrument to be uniquely compared and assessed easily.


The multi-instrument group report displays the %Deviation for the last 10 samples along with the RM%Dev across all registered laboratory instruments. The %Dev for each instrument is plotted on a user-friendly, colour coded chart for instant identification of poor performing instruments.

As an ISO requirement, the Multi-Instrument Report is an extremely useful and beneficial tool for laboratories – “Laboratories with two or more analysers for examinations, should have a defined mechanism for comparison of results across analysers” – ISO 15189:2012.

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RIQAS Inter-Laboratory Group Report

A unique group reporting facility is available allowing laboratory groups or chains to effectively monitor the performance of satellite sites.

All laboratories within a group will receive their RIQAS sample packs, analyse the samples, return results to RIQAS and receive their individual RIQAS reports as normal. In addition to this a separate group report will be sent to the group manager or supervisor allowing relative performance of all laboratories within the group to be assessed.


For each laboratory in the group, the interlaboratory group report displays the %Dev for the last 10 samples along with the RM%Dev. The %Dev for each laboratory is plotted on a user-friendly, colour coded chart for instant identification of poor performing labs.

inter-laboratory group report

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RIQAS End-of-Cycle Report

RIQAS End-of-Cycle reports are sent to all participants who receive the standard report. Therefore, participants who are enrolled in RIQAS Urinalysis, RIQAS Urine Toxicology and RIQAS Serology programmes will not receive an End-of-Cycle report.

The RIQAS End-of-Cycle report provides laboratories with a complete summary of their External Quality Assessment performance. Performance is also compared to that of the previous cycle providing an indication of progress and improvement over time. Data is presented in both written and graphical format allowing a visual assessment of overall performance.

The RIQAS End-of-Cycle report is split into 3 sub-sections. These sub-sections are designed to allow performance assessment at a glance.


RIQAS End-of-Cycle Report Features

The Parameter Cycle Summary section provides an overview of the results returned for each sample in the cycle. The text section summarises the laboratory’s result compared to the Mean for Comparison. Laboratory performance for the current cycle is also compared to that of the previous cycle. A variety of charts including Levey-Jennings, Target Score, % Deviation by sample and % Deviation by concentration are also presented allowing a visual assessment of laboratory performance over the cycle.

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The text section provides a summary of the laboratory’s results and statistics including Mean for Comparison, SDPA, %CV, Uncertainty, SDI, Target Score and % Deviation. An additional table comparing performance for the current cycle to the previous cycle is also provided.

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The laboratory’s performance is summarised in various charts including Levey-Jennings, Target Score, % Deviation by sample and % Deviation by Concentration.

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The absolute SDI summary report compares current performance for all parameters to the previous cycle and indicates whether performance is better or worse. Performance is compared to other RIQAS participants in your country and worldwide.

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A certificate of performance is provided listing all parameters, for which the laboratory achieved an acceptable level of performance (Average Absolute SDI <2). Although the End-of-Cycle Report is issued for all registered parameters, the certificate of performance will only be available for parameters where results for at least 50% of samples in the cycle have been returned.

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RIQAS Standard Report

There are a variety of RIQAS reports designed to enable quick and easy identification of any trends or test system issues. The standard quantitative report is provided in a user-friendly, one page per parameter format allowing a visual, at-a-glance assessment of performance. The standard quantitative report is split into several easy to interpret subsections each designed to save valuable laboratory time.

You can explore each of the report sections using the table below. Don’t forget, to enlarge the image, simply click on it.


RIQAS Reports Features

Performance data is presented in a simple one page format for each analyte. Each one page report comprises seven sub-reports providing a statistical and graphical representation of laboratory performance.

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The text section provides a statistical breakdown of results by all methods, your method and instrument group. The Mean, CV% and Uncertainty or Measurement is presented for each comparison group.

Your laboratory’s result is compared to the Mean for Comparison (usually the instrument group Mean). Also included are the RIQAS performance indicators; SDI, Target Score and %Deviation.

Acceptable performance criteria:

  • SDI <2
  • Target Score >50
  • %Deviation

The defined acceptable limits default to the RIQAS TDPA values but may be based on CLIA, biological variation or country specific limits.

Performance goals based on Biological Variation are also stated within the text section for information purposes.


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The histogram chart provides an overview of how your laboratory’s result compares to the all method group, your method group and your instrument group. Your result is represented by a black triangle; the closer to the centre the better.

The chart is intended to provide a quick visualisation of performance compared to other method groups and can be used to identify any potential bias.

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The Levey-Jennings chart plots the last 20 SDI’s and is extremely useful for monitoring EQA performance over time, allowing quick and easy identification of any trends or bias. The chart is colour coded making interpretation simple and easy; results that fall in the white area are excellent and those in the red area unacceptable.

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The Target Score (TS) chart is a unique chart which displays your laboratory’s last 20 target scores delivering an instant, visual indication of performance. The TS chart is conveniently colour coded for even easier performance assessment, a TS >50 is acceptable. The TS is a numerical index relating your %Deviation from the mean to a Target Deviation for Performance Assessment (TDPA).

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The %Deviation by sample chart displays the %Deviation for the last 20 EQA samples enabling identification of trends and shifts in performance. Similar to the other charts on the RIQAS report, the %Deviation by sample chart is shaded to indicate the limit of acceptable performance. A black dot within the white section of the chart will represent results with a %Deviation within your acceptable limits of performance; a black dot within the red section of the chart will represent results with a %Deviation outside your acceptable limits of performance. %Deviations are not influenced by the performance of your peers, as seen with the standard deviation index (SDI) and therefore is a better indicator of individual performance.

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The %Deviation by concentration chart enables easy detection of possible concentration related biases. Unlike the other charts provided on the report, the %Deviation by concentration chart displays the concentration range of the previous 20 samples along the bottom of the chart.

Using this scale along with the percentage deviation, you are provided with a rapid assessment of your %Deviation in relation to the concentration of the:

• Current sample (represented by a square)
• Your 19 previous results (represented by circles)

This chart provides an easy interpretation of potential positive or negative biases at high or low concentrations, or whether a particular sample is a random outlier.

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The Multi Method Stat Section provides you with an easy way of assessing the performance of the other methods used to analyse the parameter. This is useful when your laboratory plans to change the analytical method used for the parameter.

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Located at the back of the standard quantitative report, our quick reference summary page details the performance for each registered parameter in the programme.

Within the performance column, RIQAS provides an effortless method of assessing the performance of each parameter within the sample distribution. When a red triangle appears next to the parameter, this indicates that all performance indicators (SDI, TS and %DEV) have exceeded the performance criteria.

The performance indicator limits for each parameter are exceeded when your result produces:
• An SDI greater than +/- 2 standard deviations.
• A Target Score less than 50 (only when Target Scoring is available)
• A %Deviation greater than your set acceptable limits of performance.

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A summary CSV file is available on request to all participating laboratories. The report provides a summary of all statistics, acceptable limits and performance indicators as a .csv file for each sample in the cycle.

A retrospective statistics summary is also available, four weeks after the final submission date for parameters where a result was not submitted on time.