Specimen Redraws From Lost Tubes: Estimating the Hidden Cost

What does a lost or delayed specimen actually cost?

A lost or delayed specimen seldom ends as a minor nuisance. In most cases the lab asks for a redraw, which means a second venipuncture, a second label run and another trip through the building. Patients wait longer for results, and staff absorb extra minutes that never appear on a budget line.

According to a Medical Laboratory Observer review, pre-analytical errors are the phase most prone to error and the one most often behind a redraw. The same review puts the average cost of a pre-analytical error episode at about $349, rising to $2,700 for a critically ill patient, and says these costs can add up to slightly more than 1% of a hospital's operating budget. Those are averages across mixed settings, so use them to frame the question rather than to forecast your own bill.

Where does the redraw bill come from?

Recollection is the visible part. Behind it sit repeat transport, reprocessing of the replacement sample, administrative time spent on the occurrence report, and the person-hours needed to trace the original tube. The Northwell Health Laboratories costing, presented at ASCP in 2016, counted those person-hours on purpose, which is why its totals run higher than a simple supply-cost calculation would.

The patient side is harder to price but just as real. The MLO review names increased treatment hours, the redraw itself, reanalysis and quality investigation as costs that land on care, not only on the lab. A delayed result can push back a discharge or a treatment decision, and those ripples rarely show up in the lab's own ledger.

What do the published rejection and loss numbers show?

Rejection rates vary by setting. In a study of 1.4 million specimens reported by MLO, inpatient rejections ran at 1.0%, outpatient at 0.35% and emergency department at 1.97%. An outpatient average can look healthy while an ED draw station quietly loses ground, which is why the rate should be split by site from the start.

The loss-cost figures are older. In a Northwell Health Laboratories study presented at ASCP in 2016 and reported by Medscape, one irretrievably lost specimen averaged $584, and cumulative errors over three months exceeded $20,000. Becker's, citing the same study, gives a specimen found later at about $401 and 11.7 hours, a specimen never found at $584 and 18.5 hours, and an improperly collected specimen needing STAT retesting at about $1,599 and 3.8 hours. A 2016 cost breakdown by Atwaru et al., reported by Patient Safety Solutions, lists $401.25 and $583.72 per specimen, with three-month totals of $14,826.45 and $20,430.20. These are dated dollar values, so any budget built on them should be rebased to current wages and volumes.

How do controlled transport and locker custody reduce losses?

Most losses happen at handoffs, not inside the lab. A specimen sits in a bag on a counter, rides with a runner who is also covering other stops, or waits in a receiving bin until someone notices the gap. Batch transport lengthens those gaps, because tubes wait for the next scheduled run.

Controlled transport narrows that window in two ways. Continuous movement replaces batch runs, and a locker holds the tube in a secured compartment until a named staff member retrieves it. The tracking record then shows where a specimen was and when, which turns a missing tube into an answerable question instead of an afternoon search.

Vendor data points the same direction, but it is vendor-reported. MobileAspects describes UAB moving from about 900 lost specimens a year, roughly a 3% loss rate, to a single lost specimen, which the vendor attributes to an external courier issue. The same post reports standard specimen SLA improving from 85% to over 99% and STAT from 90% to 99%. Treat those figures as a hypothesis to test against your own log, not as a benchmark.

What is changing at Hancock Health's Parkway facility?

Hancock Health extended its specimen robot network in May 2026 to its Parkway outpatient facility, moving specimens from the main draw center to the hospital lab. According to PYMNTS, the robots drop specimens into secure lockers called Arrive Points, which hold them until staff retrieve them. A May 28, 2026 press release from Arrive AI, the vendor, says the network will move specimens continuously throughout the day instead of relying on traditional manual batch transport workflows.

The release expects faster outpatient lab turnaround and less congestion, but it reports no measured results yet and says two transport routes were still being evaluated. Arrive AI also published a March 2026 white paper on operational insights, though the summary available for this review contains no figures from it. The redraw rate at Parkway is not in the public record reviewed here, so the deployment should be read as a process change under observation, not as proof of fewer redraws.

Earlier numbers come from the vendor and from local leaders. Before the robots, a medical assistant at the Sue Ann Wortman Cancer Center made 10 to 15 specimen trips a day and spent at least 90 minutes walking them, according to an Arrive AI release quoted by PYMNTS. Arrive AI says the system cuts time away from patients at least in half. WRTV reports that leaders expect the robot to save staff up to 15 minutes per day on lab trips. Hancock Health serves more than 30 locations in east-central Indiana.

Dates also need care. PYMNTS places the original hospital deployment in October 2025, while WRTV reports the hospital robot rolled out in April. Pick one date for any internal write-up and cite the source you used.

How do you estimate your own redraw rate and cost?

Start with counts, not assumptions. Rejection is measured per specimen type and collection setting, so your estimate should be built the same way. Pull a window long enough to include a normal week and at least one peak day, then gather the following for each site.

• Total draws by site, specimen type and shift, so the rate has a true denominator.
• Redraw events in the same window, each with a cause code that separates clotting, short draws, labeling errors and transit loss.
• Minutes per redraw for phlebotomy, lab receiving, reprocessing and any courier re-run, measured with a short time study.
• Added patient wait for redrawn specimens, from original draw to final result, compared with the same tests drawn cleanly.

Does the math hold up against published ranges?

Redraws per 1,000 draws gives the rate. Annual redraw cost equals redraws per year multiplied by the labor minutes converted at your own loaded hourly rate, plus supplies, transport and investigation time. Use your payroll and supply figures rather than published averages. The Northwell costing counted person-hours for exactly this reason, and leaving them out understates the total.

Then compare your result with the published ranges and explain any gap. An outpatient rate far above 0.35%, or an ED rate far above 1.97%, points to a process problem rather than bad luck. Cause codes will show whether the excess comes from collection technique or from transport, and only the transport share is something a locker or tracking step can touch.

What should a pilot measure before anyone commits?

A pilot earns its keep when it tests one route against your baseline. Choose a single draw site and its main lab, keep the baseline running for the same window length, and record identical metrics on both sides: redraws, lost specimens, time to receipt and STAT turnaround. Write the go or no-go thresholds before the first run, while nobody has a stake in the result.

Scope is where many pilots stall. Service Robot Co. starts with a site assessment that maps the route, locker placement and staffing handoffs, then quotes one fixed payment on a 3-year lease once that assessment is complete. We lease robots only, select units across manufacturers, and handle deployment, integration, staff training and service through a nationwide US engineer network, so a clinic or lab works with one partner for the whole lifecycle.