Specimen Transport & Logistics
Your LIS starts tracking a specimen when it is accessioned. This page is about the hours before that: how a specimen gets from the draw to the bench intact, documented and accounted for.
400K+
Shipments Per Month
99.7%
On-Time Delivery
50
State Coverage
The hours nobody is watching
Laboratory information systems are good at what they do, and what they do starts at accessioning. Specimen tracking software picks up the story when the sample is already on the bench. Before that there is a window, sometimes minutes and sometimes most of a day, where the specimen is in a bag, in a vehicle, somewhere between a clinic and a laboratory, and the record depends entirely on whoever is carrying it.
That window is where pre-analytical problems are made. In a review of 648 surgical specimen safety events reported by more than 50 US facilities between 2011 and 2013, roughly 38% involved transport to the laboratory or storage before receipt, and within those, 31% were specimens misplaced or lost before they ever reached the lab. Those are shares of reported events rather than rates per specimen, and the dataset covers handling inside health systems rather than contracted couriers. The point is not the number. It is that the gap between the draw and the accession is where specimens are most exposed and least observed.
How a specimen actually moves
Five points where the record is made. A transport record is only useful if nothing goes dark between them.
Pickup at the collection site
The courier scans the label the collection site already applied. That scan carries a timestamp, the courier's identity and a location, which is the first entry in the transport record and the point at which responsibility transfers.
Into the controlled environment
The specimen goes into packaging matched to its required temperature range and, where the analyte needs it, into continuous monitoring. Category B specimens travel in triple packaging under Packing Instruction 650.
In transit
GPS tracks the vehicle and the route. Where the shipment is temperature-controlled, a logger records the actual conditions rather than the intended ones, so the receiving lab can judge acceptability on evidence.
Handoffs and hubs
Multi-leg journeys are where records usually break. Each transfer between courier, hub and onward leg is scanned in the same way, so the chain does not go dark between A and B.
Delivery and proof
Electronic proof of delivery captures the receiving signature and time. The lab can reconcile what arrived against what was dispatched, and record the receipt date and time its own records require.
What “chain of custody” actually means for a clinical specimen
Plenty of courier marketing implies that clinical specimens require a forensic-style custody form. They do not, and it is worth being accurate about this, because the real requirement is more useful than the myth.
Chain of custody is a term of art from regulated testing. US DOT defines it at 49 CFR 40.3 as the procedure used to document the handling of a specimen from the time the donor provides it until it is destroyed, and in federally regulated drug testing it is executed on a federal Custody and Control Form. Even there the courier signs nothing: the form has no courier signature line, because integrity in transit is carried by the tamper-evident seal, not by a signature at every stop.
CLIA does not use the phrase at all. What it requires is that the laboratory establish written policies ensuring positive identification and optimum integrity of a specimen from collection through reporting (42 CFR 493.1232), maintain written procedures covering conditions for specimen transportation (493.1242(a)(5)), and document the date and time it receives a specimen (493.1242(b)). CLIA does not prescribe temperatures, transit windows or vehicle standards. Your laboratory defines those conditions in writing. A courier executes them.
For CAP-accredited laboratories the transport-side requirement is a tracking system, not a custody form. GEN.40530 requires that for specimens submitted from remote sites there is a tracking system and record to ensure all specimens are actually received, with records that should include time of dispatch and receipt and the condition of specimens on receipt. CAP says this applies to couriers and transportation systems within the laboratory organization or contracted by it. In other words, a contracted courier is part of how the laboratory satisfies the requirement, which is exactly the record DS2 is built to produce.
Inside the band, not merely cold
Four bands cover most diagnostic transport. What matters is whether the specimen stayed inside the one its test is validated for.
| Band | Range | Notes |
|---|---|---|
| Controlled room temperature | 20 to 25C | Ambient-stable analytes; excursions of 15 to 30C are permitted under USP <659> |
| Refrigerated | 2 to 8C | The most common band for clinical specimens |
| Frozen | -25 to -10C | Specimens requiring frozen storage in transit |
| Dry ice | approx -78.5C | Frozen biologics and long-haul frozen shipments, shipped as UN1845 |
Route design follows from stability, not the other way around. CLSI documents analyte stability windows measured in hours, so transit time plus any wait at either end has to fit inside the shortest window in the batch. Our cold chain shipping guide covers the packouts, and the UN3373 guide covers the packaging rules the return leg has to meet.
What happens when something goes wrong
Every provider sells monitoring. The question worth asking is what happens in the ten minutes after an alert fires.
A temperature excursion
An alert on its own changes nothing. What matters is the protocol behind it: who is paged, how fast, whether the run is diverted or the packout swapped, and who makes the disposition call with the lab. Our 24/7 operations center exists to act on an excursion in transit rather than have the lab discover it at delivery.
A specimen that cannot be accepted
If a specimen arrives outside its stability window or its condition is questionable, the useful thing is a documented transport record showing what actually happened, so the lab can decide on evidence and, where a redraw is needed, schedule it quickly rather than investigate first.
A specimen that does not arrive
The dispatch record and the receipt record have to reconcile. Where they do not, the scan history narrows the gap to a specific leg and a specific handoff instead of a blank space between the clinic and the bench.
The record for the window your LIS cannot see
DS2 moves more than 400,000 shipments a month across all 50 states on a temperature-monitored fleet, with GPS tracking on every shipment, chain-of-custody documentation at every handoff, and a 24/7 operations center that can act on a problem in transit rather than report it afterwards.
Because the same partner also builds the collection kits the specimen travels in, the packout, the temperature band and the return packaging are specified together rather than assembled from parts. See the medical courier service for coverage, routing and the wider logistics network.
Specimen transport questions
What is specimen transport?
Specimen transport is the movement of diagnostic specimens from the point of collection to the laboratory that will test them, under conditions that keep the sample testable and accounted for. It covers the packaging, the temperature control, the timing against each analyte's stability window, and the record of who held the specimen and when.
Is chain of custody required for clinical specimens?
Not in the forensic sense, and this is widely misunderstood. Chain of custody is a term of art from regulated testing: 49 CFR 40.3 defines it as the procedure documenting handling of a specimen from the point the donor provides it until it is destroyed, executed on a federal Custody and Control Form. CLIA does not use the phrase at all. What CLIA requires is written policies ensuring positive identification and specimen integrity from collection through reporting (42 CFR 493.1232), written procedures covering conditions for specimen transportation (493.1242(a)(5)), and documentation of the date and time the laboratory receives a specimen (493.1242(b)).
What does an accredited laboratory need from its courier?
A record. The CAP Laboratory General Checklist requires that for specimens submitted from remote sites there is a tracking system and record to ensure all specimens are actually received, with records that should include time of dispatch and receipt and the condition of specimens on receipt. CAP states this applies to couriers and transportation systems within the laboratory organization or contracted by it, which means a contracted courier is part of how the laboratory meets the requirement.
How is specimen transport different from specimen tracking software?
They cover different parts of the timeline. A LIS or specimen tracking system generates the identifier, prints the label and accessions the specimen when it reaches the laboratory. Transport covers the hours before that: the courier scans and moves the identifier the collection site applied, and records each handoff. The courier does not create the identifier or interpret the result; it supplies the record for the window when the specimen is outside the lab's walls.
Does DS2 handle regulated drug testing collections?
Transport for regulated drug testing works differently and the distinction matters. In federally regulated testing the Federal Custody and Control Form documents the collection, and the courier signs nothing: the form has no courier signature line, because integrity in transit is carried by the tamper-evident seal and packaging rather than a signature at every handoff. Note that 49 CFR 40.45(b) provides a shipping container is not required where a laboratory courier hand-delivers specimens from the collection site to the laboratory. Speak to us about your specific program.
What temperature ranges can specimens travel at?
Controlled room temperature (20 to 25C), refrigerated (2 to 8C), frozen (-25 to -10C) and dry ice (around -78.5C), matched to what each analyte is validated for. The right question is not how cold the shipment is but whether it stayed inside the band its test requires, which is why monitoring and the resulting record matter more than the packaging alone.
How quickly does a specimen need to reach the lab?
It depends entirely on the analyte, and the range is wide. CLSI documents stability windows measured in hours for many tests, so route design is really arithmetic: the transit time plus any wait at either end has to fit inside the shortest stability window in the batch. That is a route planning problem before it is a driving problem.
References
- 1.42 CFR 493.1232 (CLIA, Standard: Specimen identification and integrity): laboratories must establish and follow written policies ensuring positive identification and optimum integrity of a specimen from collection or receipt through completion of testing and reporting.
- 2.42 CFR 493.1242 (CLIA, Standard: Specimen submission, handling, and referral): written policies for specimen labeling, storage and preservation, conditions for specimen transportation, and specimen acceptability and rejection; the laboratory must document the date and time it receives a specimen.
- 3.42 CFR 493.1283 (CLIA, Standard: Test records): records must include positive identification of the specimen, the date and time of receipt, and the condition and disposition of specimens not meeting acceptability criteria.
- 4.College of American Pathologists, Laboratory General Checklist, GEN.40530 Specimen Tracking: a tracking system and record for specimens submitted from remote sites, applying to couriers and transportation systems within the laboratory organization or contracted by it.
- 5.49 CFR 40.3 (US DOT): defines chain of custody as the procedure used to document handling of the specimen from the time the employee gives it to the collector until it is destroyed. 49 CFR 40.45(b): a shipping container is not required where a laboratory courier hand-delivers specimens to the laboratory.
- 6.Steelman VM, et al. Retained Surgical Specimens and Specimen Handling Errors. Arch Pathol Lab Med. 2016: of 648 surgical specimen safety events reported by more than 50 US facilities (2011-2013), roughly 38% involved transport to the laboratory or storage before receipt, and 31% of those were specimens misplaced or lost before reaching the laboratory.
- 7.CLSI PRE04, Collection, Transport, and Processing of Blood Specimens: handling, transport and storage conditions alter the trueness of a result, with analyte stability measured in hours.
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