GeneXpert XVI / IV System Bi-Directional LIS Interfacing Guide
Complete engineering specification, HL7/ASTM protocols, pinouts, and parameter mapping for GeneXpert XVI / IV System on AILS Cloud LIMS.
1. GeneXpert XVI / IV System Interfacing Overview & Diagnostic Workflow
The GeneXpert XVI / IV System is an advanced diagnostic system utilizing real-time fluorescence thermocycling technology for hormones, tumor markers, cardiac biomarkers, infectious serology, and molecular pathogen detection. Integrating the GeneXpert XVI / IV System with AILS Cloud LIMS standardizes cut-off index (COI) calculations, calibrator curve tracking, and electronic batch signing.
AILS exports 96-well or 384-well plate setup layouts to the GeneXpert XVI / IV System, linking sample accession IDs with internal positive/negative amplification controls.
Real-time cycle threshold (Ct) values and baseline-subtracted fluorescence metrics are ingested directly, automatically classifying qualitative pathogen detection (Detected / Not Detected / Indeterminate).
2. GeneXpert XVI / IV System TCP/IP Socket & Network Configuration
TCP/IP MLLP Network Socket / Automated Network Shared Folder File Watcher. Standard HL7 v2.5.1 or XML Export.
[Instrument IP Client] [AILS Gateway Server] Socket Address -------------> Static IP : Port 5000 Start of Block -------------> <VT> ASCII 0x0B End of Block -------------> <FS><CR> ASCII 0x1C 0x0D Payload Standard -------------> HL7 v2.5.1 / LIS Interface KeepAlive Probe -------------> Bi-Directional ACK (AA)
3. GeneXpert XVI / IV System HL7 v2.x Message Stream
Below is a validated communication frame transmitted between the GeneXpert XVI / IV System and AILS LIS middleware:
MSH|^~\&|GeneXpert|Cepheid|AILS_LIMS|LAB_MAIN|20260815155000||ORU^R01|MSG009980|P|2.5.1 PID|1||P982430||Taylor^Marcus||19820620|M OBR|1|ORD982430|ACC2026081542|MTB_RIF^MTB-RIF Assay|||20260815154500 OBX|1|ST|MTB^M. Tuberculosis Detection||DETECTED|||A|||F OBX|2|ST|RIF^Rifampicin Resistance||NOT DETECTED|||N|||F OBX|3|NM|CT_PROBE_A^Probe A Cycle Threshold||22.4|Ct|15.0-38.0|N|||F OBX|4|NM|CT_PROBE_B^Probe B Cycle Threshold||21.8|Ct|15.0-38.0|N|||F
4. GeneXpert XVI / IV System Clinical Parameter LOINC & Reference Range Dictionary
| Instrument Code | LOINC Code | Clinical Parameter Name | Standard Units | Default Reference Range |
|---|---|---|---|---|
| MTB_DETECT | 71773-6 | M. Tuberculosis Qualitative | Call | Not Detected |
| RIF_RESIST | 71774-4 | Rifampicin Resistance Mutation | Call | Not Detected |
| CT_VAL | 82348-4 | PCR Cycle Threshold (Ct) | Ct | 15.0 - 38.0 |
5. Cepheid Biomedical Engineering Field Notes & Gotchas
In GeneXpert Dx software, configure LIS Communication to HL7 Bi-Directional or File Export to network shared folder.
AILS Gateway directory watcher detects new `.gxe`, `.xml`, and `.csv` files within 500ms.
Verify panic SMS triggers are configured for detected multidrug-resistant pathogen calls.
Frequently Asked Questions: GeneXpert XVI / IV System LIS Interfacing
Common biomedical engineering questions regarding connection, worklist setup, and data capture with AILS Cloud LIMS.
Q: What interface protocols are supported by Cepheid GeneXpert?
GeneXpert supports HL7 v2.5.1 over TCP/IP MLLP socket and automated XML/CSV file export monitoring.
Q: How does AILS capture real-time PCR Ct values from GeneXpert?
AILS parses exact cycle threshold (Ct) values for all probe channels (Probe A, B, C, D, E) and internal control (SPC) from OBX segments.
Q: How does AILS handle critical infectious disease results (e.g. MTB Detected)?
Positive pathogen detections trigger immediate on-screen panic banners, emergency WhatsApp/SMS alerts to the treating clinician, and mandatory public health reporting queues.
Q: Can GeneXpert operate in bi-directional host query mode?
Yes. When a cartridge barcode and specimen tube barcode are scanned, GeneXpert queries AILS LIMS to confirm patient identity and test profile.
Q: Are multiplex assays (e.g. Flu/RSV/SARS-CoV-2 4-in-1 cartridges) supported?
Yes. All targets in multi-analyte cartridges are parsed into discrete sub-tests under the master molecular panel.
Related Immunoassay & PCR Instrument Guides
Compare protocols, pinouts, and parameter mapping dictionaries for comparable diagnostic equipment.
Roche Cobas e411 (Elecsys)
Benchtop ECLIA immunoassay analyzer for thyroid, tumor markers, cardiac biomarkers, and fertility hormones. Complete ASTM result parsing with lot tracking.
Roche Cobas AmpliPrep
Automated sample preparation system for quantitative molecular PCR assays (HIV-1, HBV, HCV). Connects to AILS Gateway to track extraction batches.
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.
Connect Your GeneXpert XVI / IV System 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 GeneXpert XVI / IV System.