Barcode Printing in Your LIS: Eliminating Manual Specimen Labels

A three-year analysis published in the International Journal for Quality in Health Care tracked 5,951,783 processed samples and logged 34,395 incidents, of which 1,031 were diagnostic errors. The number worth sitting with is the distribution: 89.2% of those errors occurred in the pre-analytical phase — before the specimen ever reached an analyzer. A companion study found human factors to be the single largest cause, at 58.7%.

That distribution is not an accident, and it is not a comment on the competence of lab staff. It is a comment on where automation stops. The analytical phase is instrumented, timed, calibrated, and quality-controlled. The pre-analytical phase — collecting the specimen, identifying it, labelling it, getting it to the right bench — is still largely a person with a pen.

Barcode labelling is the single highest-leverage intervention in that phase, and it works best when it is not a separate step. This post covers what barcode printing lab software means when it lives inside the LIS itself, and what changes when the label is generated at the moment of accession rather than written by hand afterward.

The Problem With the Label

Consider what a handwritten specimen label has to survive.

It is written in a hurry, often at a collection point rather than in the lab. It carries a patient identifier that has to match, character for character, a record in a system the person writing it may not be looking at. It goes onto a tube that will be centrifuged, refrigerated, sometimes handled with gloves that are not dry. It may need to be read six hours later by a different person on a different shift.

Every one of those steps is an opportunity for the specimen and its identity to come apart. The failure modes are well known to anyone who has worked a bench:

• Transposition. Two digits of an MRN swapped. The specimen is valid, the identity is wrong, and nothing downstream will catch it.
• Ambiguity. A handwritten 1 that reads as 7. A 5 that reads as S.
• Two patients, similar names. The classic, and the reason two-identifier policies exist.
• Degradation. Ink that runs, labels that peel at refrigeration temperature, print that abrades in transport.
• The unlabelled tube. Labelled "after" and then not labelled. The specimen is unusable and the patient gets drawn again.

A printed barcode removes the handwriting from the loop, and — more importantly — removes the transcription. The identifier on the label is not a copy of the record; it is generated from the record.

What "Barcode Printing Inside the LIS" Means

There is an important distinction between a lab that uses barcodes and a lab whose LIS prints them.

Plenty of labs print labels from a standalone labelling application. Someone opens it, types or pastes the patient identifier and specimen details, selects a template, and prints. That is better than handwriting — the barcode itself is machine-readable and the print is legible. But the transcription step is still there. It has simply moved from the tube to a keyboard.

When barcode printing lives inside the LIS, the sequence is different. The patient record already exists. The order already exists. Specimen accession creates the specimen record, and the label is rendered directly from it. Nobody types an identifier, because the identifier is already known to the system generating the label.

That is the entire point. The value is not the barcode. The value is that no human retypes an identifier at any point between the order and the tube.

How LISBridge Lab Implements It

LISBridge Lab handles the workflow side of a laboratory — patient management, order entry, specimen accession, results, billing, and reporting — alongside the LISBridge instrument connectivity layer.

Barcode printing is wired into specimen accession rather than offered as a separate utility:

• Generated from the specimen record. When a specimen is accessioned, it receives an identifier. The label encodes that identifier. There is no intermediate step where a person reads a number off one screen and enters it into another.
• Human-readable and machine-readable together. The label carries the barcode plus the fields a person needs to verify at a glance — patient name, identifier, specimen type, collection date and time, and the tests requested. Barcodes are for scanners; the printed text is for the technologist who needs to confirm the right tube is in their hand before loading it.
• Reprint without re-entry. Labels fail. They peel, they smudge, a tube gets split into aliquots. Reprinting from the existing specimen record produces an identical label rather than a second, hand-made approximation of the first.
• Batch printing at accession. A multi-tube draw generates its labels together, in the order they will be filled, rather than one at a time.
• Standard label printers. Output targets ordinary thermal label printers rather than requiring a specific certified device, which matters for labs that already own hardware.

Note the terminology, because it changed in a recent release and older documentation may use the previous names: what LISBridge Lab now calls Order Entry was previously "Test Orders," and Specimen Accession was previously "Sample Collection." The workflow is the same; the language is more precise.

What Changes Downstream

The labelling improvement is the visible one. The consequences are further along.

The specimen becomes scannable at every handoff

Once a specimen carries a machine-readable identifier, every subsequent handoff can be verified rather than assumed. Received at the lab: scan. Loaded onto the analyzer: scan. Aliquoted: scan. Stored: scan. Each scan is a positive identification rather than a visual match, and each one is timestamped.

The instrument stops guessing

This is where labelling and instrument connectivity meet. An analyzer that reads a barcode off the tube knows exactly which specimen it is running, and the result it emits carries that identifier. LISBridge parses the result and matches it to the specimen record by identifier — not by position on a rack, not by time of run, not by an operator's note.

For the 16 instruments in the catalogue that support bidirectional operation, the loop closes completely: the order is dispatched to the analyzer, the analyzer scans the tube, runs the requested tests, and returns the result tagged with the same identifier that was printed at accession. Nothing in that chain depends on someone reading a number correctly.

The chain of custody becomes a record rather than a recollection

Accreditation bodies ask how specimen identity is maintained. A scan history answers that question with data. A set of initials on a worksheet answers it with a claim.

What It Does Not Fix

Worth stating plainly, because the pre-analytical statistic invites overclaiming.

The pre-analytical phase covers more than labelling and data entry. It includes drawing the right patient, drawing into the right tube type, filling to volume, mixing adequately, and transporting under the right conditions. Barcode printing does not touch most of that. A tube labelled perfectly for the wrong patient is still the wrong specimen — which is why positive patient identification at the point of collection, with the label printed against a verified patient record, is the part that carries the weight.

The honest claim is narrower and still substantial: barcode printing at accession removes one named, well-documented category of error from that 89.2% bucket, and it removes the category most often traced to human factors.

Frequently Asked Questions

Do I need a special printer?

No. LISBridge Lab prints to standard thermal label printers. Labs that already have labelling hardware generally do not need to replace it.

Can I customise what appears on the label?

Yes — the field layout is configurable, which matters because label stock sizes vary and different labs prioritise different fields. Some want the collection time prominent; some need the test panel visible without scanning.

What if the label is damaged or the tube is aliquoted?

Reprint from the specimen record. The reprinted label is identical to the original, encoding the same identifier — which is exactly the property a hand-copied replacement label lacks.

Will my analyzer read these barcodes?

Analyzers with onboard barcode readers read standard symbologies. The relevant question is usually not whether the analyzer can read the label but whether the identifier it reads means anything to the system receiving the result — which is where the connectivity layer matters as much as the printer.

Does this work if the lab has no internet connection?

Yes. LISBridge runs locally as a native desktop application, with device-based licensing enforced offline. Printing, accession, and instrument connectivity all continue through an internet outage.

Where This Fits

Labelling and connectivity are two halves of the same problem. A perfectly labelled specimen whose result is then typed by hand into the LIS has moved the error, not removed it. A perfectly automated instrument feed matched to a mislabelled tube produces a confidently wrong result.

LISBridge covers both ends: barcode printing at specimen accession in LISBridge Lab, and automated result capture from 35 named instruments — Sysmex, Mindray, COBAS, Horiba, Diatron, Maccura, Erba, bioMérieux and more — over serial, TCP/IP, or file transport. In a hospital running five analyzers, eliminating manual result entry alone recovered roughly two hours of staff time per day, with data accuracy above 99.9%.

To see how the instrument side connects, start with laboratory integration.

Start your free trial — no credit card required. lisbridge.com/pricing