The EasyRA sodium test is intended for the quantitative determination of sodium ions (Na+) in human serum, plasma and urine using the MEDICA EasyRA Chemistry Analyzer with the ISE module option in clinical laboratories. Sodium measurements are used in the diagnosis and treatment of aldosteronism, diabetes insipidus, adrenal hypertension, Addison's disease, dehydration, inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance. For in vitro diagnostic use only. The EasyRA potassium test is intended for the quantitative determination of potassium ions (K+) in human serum, plasma and urine using the MEDICA EasyRA Chemistry Analyzer with the ISE module option in clinical laboratories. Potassium measurements are used to monitor electrolyte balance in the diagnosis and treatment of diseases conditions characterized by low or high blood potassium levels. For in vitro diagnostic use only. The EasyRA chloride test is intended for the quantitative determination of chloride ions (Cl) in human serum, plasma and urine using the MEDICA EasyRA Chemistry Analyzer with the ISE module option in clinical laboratories. Chloride measurements are used in the diagnosis and treatment of electrolyte and metabolic disorders such as cystic fibrosis and diabetic acidosis. For in vitro diagnostic use only. The EasyRA carbon dioxide reagent is intended for the quantitative determination of Bicarbonate/Carbon Dioxide in human serum and plasma, using the MEDICA "EasyRA Chemistry Analyzer" in clinical laboratories. Bicarbonate/carbon dioxide measurements are used in the diagnosis and treatment of numerous potentially serious disorders associated with changes in body acid-base balance. For in vitro diagnostic use only.
Device Story
EasyRA assays (Sodium, Potassium, Chloride, Carbon Dioxide) are in vitro diagnostic reagents used with the Medica EasyRA Chemistry Analyzer. The system utilizes an Ion Selective Electrode (ISE) module for electrolyte measurement (Na+, K+, Cl-) and chemical reagents for CO2 determination. Operated by clinical laboratory personnel, the system processes human serum, plasma, or urine samples. The analyzer performs automated quantitative analysis, providing results to clinicians to assist in diagnosing and treating conditions like electrolyte imbalance, cystic fibrosis, and acid-base disorders. The device facilitates rapid clinical decision-making by providing objective electrolyte and metabolic data.
Clinical Evidence
No clinical data provided; substantial equivalence established via bench testing and performance validation of the assays on the EasyRA Chemistry Analyzer.
Technological Characteristics
System utilizes Ion Selective Electrode (ISE) technology for Na+, K+, and Cl- detection. CO2 is measured via chemical reagent assay. Designed for use with the Medica EasyRA Chemistry Analyzer. In vitro diagnostic use only.
Indications for Use
Indicated for quantitative determination of sodium, potassium, chloride, and bicarbonate/CO2 in human serum, plasma, and urine to diagnose/monitor electrolyte imbalances, metabolic disorders, and acid-base balance in clinical laboratory settings.
Regulatory Classification
Identification
A sodium test system is a device intended to measure sodium in serum, plasma, and urine. Measurements obtained by this device are used in the diagnosis and treatment of aldosteronism (excessive secretion of the hormone aldosterone), diabetes insipidus (chronic excretion of large amounts of dilute urine, accompanied by extreme thirst), adrenal hypertension, Addison's disease (caused by destruction of the adrenal glands), dehydration, inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance.
Submission Summary (Full Text)
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Public Health Service
## DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/0/Picture/2 description: The image shows the seal of the Department of Health & Human Services, USA. The seal features a stylized eagle with outstretched wings, symbolizing protection and service. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES. USA" is arranged in a circular pattern around the eagle.
Food & Drug Administration 10903 New Hampshire Avenue Building 66 Silver Spring, MD 20993
Medica Corporation c/o Dr. Photios Makris Director OA/RA 5 Oak Park Drive Bedford, MA 01730
Re: k100829
Trade Name: EasyRA Sodium Assay, EasyRA Potassium Assay, Easy RA Chloride Assay, Easy RA Carbon Dioxide Assay, Regulation Number: 21 CFR §862.1665 Regulation Name: Sodium Test System Regulatory Class: Class II Product Codes: JGS, CEM, CGZ, KHS Dated: December 16, 2010 Received: December 17, 2010
JAN 1 4 201
Dear Dr. Makris:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting your device can be found in Title 21, Code of Federal Regulations (CFR), Parts 800 to 895. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. Come
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You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Parts 801 and 809); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); and good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820).
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of In Vitro Diagnostic Device Evaluation and Safety at (301) 796-5450. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding postmarket surveillance, please contact CDRH's Office of Surveillance and Biometric's (OSB's) Division of Postmarket Surveillance at (301) 796-5760. For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or ( 301 ) 796-5680 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
C.H. Ph.D.
Courtney C. Harper, Ph.D. Acting Director Division of Chemistry and Toxicology Office of In Vitro Diagnostic Device Evaluation and Safety Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known): K1008299
| Device Name: | EasyRA Sodium assay: |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Indications For Use: | The EasyRA sodium test is intended for the quantitative determination of sodium ions (Na+) in human serum, plasma and urine using the MEDICA EasyRA Chemistry Analyzer with the ISE module option in clinical laboratories. Sodium measurements are used in the diagnosis and treatment of aldosteronism, diabetes insipidus, adrenal hypertension, Addison's disease, dehydration, inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance. For in vitro diagnostic use only. |
| Device Name: | EasyRA Potassium assay: |
| Indications For Use: | The EasyRA potassium test is intended for the quantitative determination of potassium ions (K+) in human serum, plasma and urine using the MEDICA EasyRA Chemistry Analyzer with the ISE module option in clinical laboratories. Potassium measurements are used to monitor electrolyte balance in the diagnosis and treatment of diseases conditions characterized by low or high blood potassium levels. For in vitro diagnostic use only. |
| Device Name: | EasyRA Chloride assay: |
| Indications For Use: | The EasyRA chloride test is intended for the quantitative determination of chloride ions (Cl) in human serum, plasma and urine using the MEDICA EasyRA Chemistry Analyzer with the ISE module option in clinical laboratories. Chloride measurements are used in the diagnosis and treatment of electrolyte and metabolic disorders such as cystic fibrosis and diabetic acidosis. For in vitro diagnostic use only. |
| Device Name: | EasyRA Carbon Dioxide reagent: |
| Indications For Use: | The EasyRA carbon dioxide reagent is intended for the quantitative determination of Bicarbonate/Carbon Dioxide in human serum and plasma, using the MEDICA "EasyRA Chemistry Analyzer" in clinical laboratories. Bicarbonate/carbon dioxide measurements are used in the diagnosis and treatment of numerous potentially serious disorders associated with changes in body acid-base balance. For in vitro diagnostic use only. |
Prescription Use X (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of In Vitro Diagnostic Devices (OIVD)
Carol C. Benam
Division Sign-Off
510(k)_
Office of In Vitro Diagnostic Device Page 18 of 146 Evaluation and Safety
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Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
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Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.