The Hidden Cost of Incontinence: Why Low Re-wet Rates are Critical for Nursing Home Budgets

The Unit Price Trap

Seven years ago, when I first took over procurement for a nursing home, my boss gave me one KPI: drive down the unit price of diapers.

I did it. I switched suppliers from A to C, saving eight cents per piece.

The following spring, the head nurse cornered me in a meeting room. She slammed a stack of laundry bills in front of me: "Do you know how much extra we've spent on washing because of leaks and soiled sheets? And how much overtime the nursing staff has put in since our pressure sore cases went up?"

That's when I realized: purchase price is the visible cost—but care is the invisible one. Visible costs show up on spreadsheets. Invisible ones? They show up where it hurts.

Today, I want to talk about the metric that drives those invisible costs—from a buyer's perspective. It's called re-wet rate.

— Sarah Chen, Procurement Director, APAC

What is Re-wet Rate? (Technical Definition: Understanding Re-wet)

Simply put, re-wet rate is the amount of liquid that flows back to the surface when pressure is applied—like when a patient sits or lies down—after the diaper has absorbed urine.

Here's how lab testing works: A specified amount of test solution (simulating urine) is poured into the diaper. After allowing time for absorption, a pre-weighed dry filter paper is placed on top, a standard weight is applied for a set period, and then the filter paper is weighed again. The increase in weight is the re-wet amount.

Industry standards typically range from 0.1g to 0.5g. But as someone who's learned the hard way, I'll tell you: lab data and real-world performance are two different things.

How Low Re-wet Rates Directly Reduce Care Costs (Financial Impact Analysis)

A. Reduced Change Frequency

High re-wet products feel "damp" to the touch. Caregivers have to change them frequently—not because they're full, but because they can't risk leaving residents' skin in a moist environment for too long.

I tracked some data:

• High re-wet products ($0.25/unit): average change every 3 hours

• Quality low re-wet products ($0.33/unit): average change every 4.5 hours

That's 1-2 fewer changes per day. In a 100-resident facility, that's 100-200 fewer diapers daily. Do the math for a year.

B. Lower Laundry & Ancillary Costs

This was my most painful lesson.

High re-wet doesn't just mean damp skin—it means leaks. And leaks mean sheets, blankets, and gowns all need changing.

I calculated our facility's laundry costs:

• Industrial washing: ~$0.40 per kilogram

• One set of sheets and blankets: ~1.5 kg

• Plus sorting, transport, labor, disinfection

The cost to wash one set of linens? Enough to buy 3-4 premium diapers.

And high re-wet products? Because their surface stays wet and their core structure is unstable, they leak at twice the rate of quality products.

C. Optimizing Staff Productivity

What's the scarcest resource in elderly care? People.

Nurses and aides should spend their time on turning, repositioning,陪伴, observing conditions—not constantly changing diapers and linens.

Every change saved by low re-wet products is the most scarce human resource freed up.

I did the math for our nursing department: 100 fewer changes per day, at 5 minutes per change (including prep, execution, cleanup, documentation), equals 500 minutes—8.3 hours of nursing time.

What could you do with those hours? Spend more time with residents. Check high-risk pressure areas more thoroughly. Spot problems earlier. All things money can't buy in terms of care quality.

Clinical Benefits: Preventing Incontinence-Associated Dermatitis (IAD)

Skin exposed to prolonged moisture has increased pH, compromised barrier function—the perfect setup for Incontinence-Associated Dermatitis.

When IAD happens:

• You need additional skin care products (more supplies)

• You need more frequent changes (more labor)

• Severe cases lead to infection (medical costs)

• Residents are uncomfortable, families complain (reputation damage)

Worse: Moist skin is far more susceptible to pressure injuries (bedsores). Treating a pressure injury costs 5-10 times what preventing it does. And pressure injury rates are key to a facility's ratings.

Quality diapers aren't a cost—they're the first line of defense against pressure injuries.

How to Evaluate Re-wet Performance in Procurement (Buyer's Checklist)

After all the lessons learned, here's my procurement evaluation checklist, shared with you:

1. Require Third-Party Test Reports

   • Ask for ISO standard test reports from SGS, TUV, or similar accredited labs

   • Focus on re-wet rate, absorption speed, and rewet values

   • Lab data gives you confidence

2. Do On-Site "Pressure Dryness Tests"

   • Request samples and test them yourself

   • Pour equal amounts of test solution, wait 5 minutes, apply weight (a stack of books works), and feel the surface with the back of your hand

   • Get procurement, nursing, and the head nurse together—let the users vote

3. Check the Acquisition Distribution Layer and SAP Distribution

   • Tear open a diaper and look at the ADL width—narrow ADL means urine concentrates in the middle, higher leak risk

   • Look at SAP distribution—if it's clumped in spots, those areas swell and create pressure points

4. Calculate Total Cost of Ownership

   • Don't just ask "How much per piece?"

   • Ask: "If we switch to this product, how many fewer changes per day? How much laundry savings?"

   • Make suppliers do this math. If they can't, don't work with them.

Conclusion: The Financial Logic of Smart Procurement

Per 100 residents, approximate annual costs

Twenty years in this industry, and my biggest regret is spending my early years staring at unit prices while ignoring true costs.

Now every time I'm in a meeting, I say this:

Quality products pay for themselves through efficiency.

A low re-wet diaper might cost a few cents more per piece. But by reducing change frequency, lowering laundry costs, freeing up nursing hours, and preventing skin complications, it saves money for your facility every single day.

Procurement isn't about buying things. It's about buying solutions. We're not purchasing a piece of disposable material—we're purchasing a lever. An invisible lever that moves the whole cost structure of care.

Hope my lessons save you a few years of learning the hard way.

About the Author: A procurement professional who's spent twenty years between  diaper manufacturing
Have questions about incontinence care procurement strategy? Comments welcome below.