What Happens When a Specimen Doesn't Arrive?

Recently a lab director emailed us one question: If a specimen doesn't arrive, how does your company handle it? Do you follow a regulatory plan?

It is the best question a lab can ask a courier, and most couriers can't answer it. Here is how we answered, and what any lab should expect to hear.

A missing specimen is a process failure, not a courier failure

When a specimen doesn't make it to the lab, the cost is never just the specimen. A patient gets redrawn. A result is delayed. A physician waits. In some cases, a diagnosis slips by days.

Most courier companies treat this as a one-off: find the driver, ask what happened, apologize. That is not a plan. A plan means the courier can reconstruct exactly what happened, from data, within minutes, and that the same failure gets harder to repeat.

The difference comes down to one question: does the courier have a chain of custody they can prove, or a story they can tell?

The five ways a specimen actually goes missing

After years of moving specimens for labs across the Mid-Atlantic and Southeast, we've found the root causes are rare but remarkably consistent. Nearly every missing specimen traces back to one of these five:

Notice that three of the five are not courier errors at all. They happen at the site. A courier with no data can only shrug. A courier with chain-of-custody data can tell the lab, within minutes, which one it was.

What a real chain-of-custody protocol looks like

At GO2, every specimen that doesn't arrive triggers the same investigation, in the same order. Nothing about it is improvised.

1. Pull the scan record. Every pickup and every delivery is scanned and time-stamped. Deliveries are confirmed with a signature or photo. The first question is always: was it scanned at pickup, scanned at delivery, and signed for?

2. Check the GPS breadcrumb trail. Every route leaves a historical GPS trail. We can verify, independently of the scan, that the courier was physically at the pickup address and the delivery address, and exactly when. If a scan says one thing and the breadcrumbs say another, we know where to look.

3. Verify the pickup itself. On a routed run across multiple sites, we confirm the courier pulled from the correct lockbox and was handed the correct specimen.

4. Run the empty-lockbox escalation. If a courier arrives and the box is empty, the protocol is fixed:

1. Confirm we are not ahead of the scheduled ready time.
2. If we are past the ready time, attempt to enter the facility.
3. If the facility is locked, the courier calls the lab from the site, and the lab contacts the facility.
4. The courier does not leave until the lab gives direction.

That last step matters more than it looks. A courier who leaves an empty box without a phone call has turned a solvable problem into a missing specimen.

5. Document it for the lab. The lab's CLIA and CAP obligations require specimen tracking and nonconformance records. Our chain-of-custody data is built to feed that documentation, not replace it. We operate under HIPAA, and every courier is trained for healthcare handling before they touch a specimen.

Frequently asked questions: specimen chain of custody

These are the questions labs ask us most often, and the ones we'd encourage you to put to any courier you work with.

When a specimen goes missing, what is the first thing you check, and how fast can you check it?

The scan record, within minutes. Every pickup and delivery is scanned and time-stamped, and every delivery carries a signature or photo. Dispatch pulls that record first and confirms whether the specimen was scanned at pickup, scanned at delivery, and signed for. If the scans are complete, the specimen is somewhere in the lab's intake. If a scan is missing, that gap tells us exactly where in the route to look.

Can you prove the driver was at my site, and at what time, without asking the driver?

Yes. Every route leaves a historical GPS breadcrumb trail. We can confirm the courier was physically at your pickup address and the lab's delivery address, and the exact time at each, independently of what the driver remembers or what the scan says. When a scan and the GPS trail disagree, that disagreement is itself the clue.

What does your driver do when the lockbox is empty? Is it written down?

It is written down, and it is the same every time. First, confirm we are not ahead of the scheduled ready time. If we are past it, attempt to enter the facility. If the facility is locked, the courier calls the lab from the site and the lab contacts the facility. The courier does not leave until the lab gives direction. An empty box without a phone call is how a solvable problem becomes a missing specimen.

Is every pickup and delivery scanned, or only some?

Every one. On a routed run across multiple sites, pickup scans are reconciled against delivery scans at the end of the route. That reconciliation is what catches a specimen still sitting in the vehicle cooler, and it is why that failure stays rare.

Can you give me documentation I can attach to a nonconformance report?

Yes. Scan history, GPS timestamps, delivery confirmation, and the escalation log are all retrievable for any delivery. Your CLIA and CAP obligations require specimen tracking and nonconformance records, and our chain-of-custody data is built to feed that documentation rather than replace it.

If your current courier's answers are "we'd call the driver" and "we'd get back to you," you don't have a chain of custody. You have a story.

Every delivery accounted for

Specimens going missing is rare. That is exactly why the process has to be fixed in advance, because nobody builds a good investigation in the middle of a bad day.

If you'd like to see how GO2's chain-of-custody process would fit your lab's routes, talk to us. We'll walk through it in detail, including the parts we've gotten wrong and fixed.

Eric Brown, CEO
GO2 Delivery