Sysmex XN-550 / XN-2000 Bi-Directional LIS Interfacing Guide
Complete engineering specification, HL7/ASTM protocols, pinouts, and parameter mapping for Sysmex XN-550 / XN-2000 on AILS Cloud LIMS.
1. Sysmex XN-550 / XN-2000 Interfacing Overview & Diagnostic Workflow
The Sysmex XN-550 / XN-2000 is an automated hematology platform engineered for high-precision complete blood counts (CBC) and white blood cell differential analysis. In modern clinical laboratory workflows, interfacing the Sysmex XN-550 / XN-2000 directly to AILS Cloud LIMS eliminates manual transcription delays, captures full WBC scattergram channel flags (such as immature granulocytes, atypical lymphocytes, and platelet clumps), and validates patient results against historical delta check baselines in real time.
AILS Gateway coordinates with the Sysmex XN-550 / XN-2000 auto-sampler and barcode scanner, dispatching QRY^Q02 query responses (DSR^Q03) mapped to patient accession IDs to queue 3-part or 5-part differential testing.
Raw result segments are evaluated instantly against laboratory reference intervals and Westgard multirule delta check algorithms. Critical alerts (e.g. severe thrombocytopenia or extreme leukocytosis) trigger automatic hold flags for pathologist microscopic smear review.
2. Sysmex XN-550 / XN-2000 TCP/IP Socket & Network Configuration
Ethernet RJ45 TCP/IP Network Connection. Recommended Gateway Port: 5001. MLLP Framing:
[Instrument IP Client] [AILS Gateway Server] Socket Address -------------> Static IP : Port 5001 Start of Block -------------> <VT> ASCII 0x0B End of Block -------------> <FS><CR> ASCII 0x1C 0x0D Payload Standard -------------> HL7 v2.5 / ASTM E1394 KeepAlive Probe -------------> Bi-Directional ACK (AA)
3. Sysmex XN-550 / XN-2000 HL7 v2.x Message Stream
Below is a validated communication frame transmitted between the Sysmex XN-550 / XN-2000 and AILS LIS middleware:
MSH|^~\&|XN-550|Sysmex|AILS_LIMS|LAB_MAIN|20260815123500||ORU^R01|MSG009830|P|2.5 PID|1||P982345||Smith^Sarah||19920822|F OBR|1|ORD982345|ACC2026081502|CBC5D^CBC with 5-Diff|||20260815123000 OBX|1|NM|6690-2^WBC^LN||6.45|10*3/uL|4.0-11.0|N|||F OBX|2|NM|718-7^HGB^LN||13.8|g/dL|12.0-16.0|N|||F OBX|3|NM|777-3^PLT^LN||280|10*3/uL|150-450|N|||F OBX|4|NM|751-8^NEU%^LN||62.4|%|40.0-75.0|N|||F OBX|5|NM|731-0^LYM%^LN||28.1|%|20.0-45.0|N|||F
4. Sysmex XN-550 / XN-2000 Clinical Parameter LOINC & Reference Range Dictionary
| Instrument Code | LOINC Code | Clinical Parameter Name | Standard Units | Default Reference Range |
|---|---|---|---|---|
| WBC | 6690-2 | White Blood Cells | 10*3/uL | 4.0 - 11.0 |
| HGB | 718-7 | Hemoglobin | g/dL | 12.0 - 16.0 |
| PLT | 777-3 | Platelets | 10*3/uL | 150 - 450 |
| NEU% | 751-8 | Neutrophils % | % | 40.0 - 75.0 |
| LYM% | 731-0 | Lymphocytes % | % | 20.0 - 45.0 |
5. Sysmex Biomedical Engineering Field Notes & Gotchas
Ensure auto-sampler rack barcodes are clean and aligned with the optical sensor.
AILS Gateway returns ACK^R01 within 200ms to avoid retry timeouts on the XN-550 IPU.
Check that the IPU network mask and default gateway match the lab subnet.
Frequently Asked Questions: Sysmex XN-550 / XN-2000 LIS Interfacing
Common biomedical engineering questions regarding connection, worklist setup, and data capture with AILS Cloud LIMS.
Q: How does the Sysmex XN-550 auto-sampler handle bi-directional worklists?
When a rack of closed vacuum tubes is loaded into the XN-550 sampler, the scanner reads each tube barcode and sends a QRY^Q02 query over TCP/IP. AILS Gateway replies with DSR^Q03 order details containing requested CBC or CBC+DIFF profiles.
Q: Can Sysmex XN-550 communicate over ASTM instead of HL7?
Yes. While HL7 v2.5 is the preferred modern standard, XN-550 also supports ASTM E1381/E1394 over TCP/IP socket. AILS Gateway natively decodes both formats.
Q: What happens if a sample has low platelet count on XN-550?
AILS Delta Check engine checks the PLT value against previous patient runs and triggers an automatic reflex smear review request if a sudden drop exceeding 50% is detected.
Q: How do you configure Sysmex XN-550 IP address for LIS connectivity?
On the XN-550 touchscreen IPU, navigate to System Settings -> Communication Settings -> Host Communication. Enter the IP of the AILS Gateway PC and set Port to 5001.
Q: Are XN-550 flags for immature granulocytes (IG) supported in AILS?
Yes. Absolute IG# and percentage IG% parameters along with abnormal morphology flags are parsed directly into dedicated clinical fields.
Related Hematology Instrument Guides
Compare protocols, pinouts, and parameter mapping dictionaries for comparable diagnostic equipment.
Sysmex XN-1000
High-throughput 5-part differential hematology analyzer. AILS LIMS receives complete CBC + DIFF parameters with automated flag mapping and delta check validation.
Sysmex XS-500i
Compact 5-part hematology analyzer ideal for medium-sized diagnostic centers. Connects directly to AILS RS232 serial middleware for real-time result ingestion.
Sysmex XT-2000i
High-speed automated hematology analyzer with fluorescence flow cytometry for CBC, 5-part DIFF, and optical reticulocytes.
Connect Your Sysmex XN-550 / XN-2000 to AILS in Under 15 Minutes
Our specialized biomedical engineering team provides complete plug-and-play drivers, cable diagrams, and bi-directional test verification for the Sysmex XN-550 / XN-2000.