You're pulling samples from the -80°C freezer. Half the labels are peeling. One tube has no label at all. You have no idea what's in it.

We've all been there. And it's not bad luck — it's chemistry.

Standard adhesive labels aren't designed for cryogenic storage. The cold causes adhesives to contract and crack, freeze-thaw cycles repeatedly stress the bond, and solvents dissolve the ink or the adhesive entirely. Tape and Sharpie was never a real solution — it was just the cheapest available one.

The real cost isn't the label though. It's what comes after:

• A wasted sequencing run because a sample can't be confirmed
• A contaminated batch that can't be traced back
• Hours of detective wor

We recently put together a detailed guide on recommended labeling solutions for scientific labs, and I’m curious what others here are using.

In our experience, most lab labeling systems fall into one of a few buckets:

• Handwritten tube labels + notebooks
• Basic label printers without structured metadata
• Spreadsheets tracking sample IDs
• LIMS systems that don’t fully capture experimental context

The problem isn’t just printing labels — it’s maintaining sample traceability, consistent naming conventions, structured metadata, and reproducibility over time.

In the guide, we cover:

• What makes a labeling system effective for research labs
• Common mistakes in scientific sampl

Labeling cryovials for -80 °C freezers or liquid nitrogen storage is a common failure point in labs. Most misidentification issues don’t come from handling errors — they come from labels that peel, fade, or become unreadable over time.

Below are current best practices for cryovial labeling, including one solution labs use to avoid adhesive-related failures.

1. Adhesive labels are the weakest link

Even labels marketed as “cryogenic” can:

• Peel off after repeated freeze/thaw cycles
• Crack or curl at ultra-low temperatures
• Fail when exposed to ethanol, DMSO, or condensation

This becomes a real problem in long-term storage and high-throughput environments.

2. Direct

Accurate blood tube labeling isn’t just a “nice-to-have” — it’s foundational to proper sample traceability, reproducibility, and avoiding serious downstream issues like mix-ups, reruns, or lost data. Traditional sticky labels often fail in cold, wet, or high-throughput environments, leading to peeling, barcode distortion, unreadable IDs, and extra manual handling.

So what’s the better alternative?
Direct-to-tube printing — where text, patient/sample IDs, and barcodes are printed right onto the tube surface rather than on an adhesive — can dramatically improve accuracy, reliability, and workflow efficiency. There are a few key benefits worth knowing:

🔹 **Improved accuracy

Wanted to share some insights from our latest blog about how labs are modernizing their sample traceability workflows as audit requirements tighten. Thought this might spark a useful discussion.

🔍 What’s Changing in Lab Traceability

Labs across biotech, public health, and research are under increasing pressure to provide clear, verifiable sample-tube labels that tie directly to digital records.
For years, many teams got by with handwritten tubes, shorthand labels, or loose tracking systems — but that’s becoming a risk.
The reality: labs that delay modernization often find themselves scrambling when new regulations or audits hit.

✅ Why Strong Traceability Matters

Robust tracea

Anyone who’s worked in a research lab knows how much time gets lost handwriting labels or re-sticking smudged tags. Between freezer cycles, ethanol wipes, and long days, even something simple like labeling can become a bottleneck — and sometimes a real data integrity issue.

The idea: skip the stickers

Some labs are switching from adhesive labels to direct printing on tubes.
Systems like TubeWriter can print several lines of text (sample ID, initials, date, project code, etc.) directly onto microtubes, cryovials, or PCR strips in seconds.

The markings are durable — they resist alcohol, water, freezing, and autoclaving — so the text stays legible no matter how many freeze-

At TubeWriter, we’ve been diving deep into the challenges that CROs face when it comes to labeling. Manual stickers and handwriting may work at small scale, but at high volumes they create risks: sample mix-ups, compliance issues, and wasted time.

We recently published a blog on this topic: Why CROs Need Lab Automation Solutions for Smarter Labeling

Here are a few highlights:

• Reduce errors: Automation minimizes labeling mistakes across thousands of samples.
• Stay compliant: Permanent, legible labels help meet GLP, CLIA, and FDA traceability requirements.
• **Save ti

Traditional cryovial labels, handwriting or adhesive stickers, fail in cryogenic conditions. At -80 °C, in liquid nitrogen, or during freeze-thaw cycles, labels peel, smudge, or dissolve in solvents like ethanol or DMSO. This leads to sample loss and misidentification.

The TubeWriter system solves this problem by printing directly onto cryovials and other labware. No adhesive, no fading, no smudging. Direct printing is durable, solvent-resistant, and supports barcodes for LIMS integration. A single TubeWriter can label 50+ cryovials in under 3 minutes, making it the most efficient and reliable method for cryogenic labeling.

If your lab needs long-term, reliable cryovial labeling, TubeWrite