Hospital Linen Par Levels: How Much Linen Do You Need per Bed?

A linen par level is the number of sets of each item you need in circulation for every bed, so that there is always clean linen available while other sets are in use, in the laundry or on the way back. Many facilities plan on a multiple of the daily need per bed, covering what is on the bed, what is in the laundry, what is on the shelf and a reserve. The right multiple for you depends on how often beds are changed, how long your laundry takes to return linen and how much you lose each month.

This guide shows how to work out a par level from your own data, gives a worked example and explains how to keep the number honest over time.

What a par level covers

Every set of linen you own is in one of a few places at any moment:

1. In use on a bed or with a patient.
2. Soiled, waiting for collection or in transit to the laundry.
3. At the laundry, being washed, dried, finished and packed.
4. Clean, on the way back or on the ward shelf.
5. In reserve, in a central store to cover peaks, delays and losses.

A par level is the total of these, expressed per bed. If any one of them is under-provided, wards run short, staff borrow from each other and linen ends up hoarded in cupboards. If the total is too high, money sits on shelves and stock ages unevenly.

The inputs you need

Work out par levels from your own operation rather than a generic number. Gather these figures for each ward type:

Input	What to measure	Where to get it
Beds	Number of staffed beds	Ward establishment
Changes per day	How many times each item is changed per bed per day, on average	Ward policy and observation over a few weeks
Laundry turnaround	Days from collection of soiled linen to return of clean linen	Laundry records or contract
Delivery frequency	How often clean linen arrives	Laundry schedule
Loss and condemnation rate	Items lost or taken out of service per month	Inventory counts
Peak factor	How much busier your busiest days are than average	Occupancy data

Changes per day vary widely by item and ward. A routine ward may change top sheets daily, while draw sheets, towels and pillow covers in a high-dependency area may be changed several times a day. Measure each item separately rather than assuming one figure for everything.

A step-by-step method

1. Calculate the daily usage for each item. Beds × changes per bed per day × average occupancy.
2. Multiply by the cycle time. Add the days linen spends in use, waiting for collection, at the laundry and in transit back. This is the stock tied up in the loop.
3. Add the ward shelf stock. Enough clean stock on the ward to cover the time between deliveries, plus a small buffer.
4. Add a reserve. A central reserve covers peaks, laundry delays and losses between replacement orders.
5. Divide by the number of beds to get the par per bed, which is easier to compare across wards and over time.
6. Round to practical pack sizes and check the answer against your storage space.

A worked example

The figures below are purely illustrative, to show the arithmetic. Replace them with your own.

Step	Example figure
Beds	30
Flat sheet changes per bed per day	1.5
Average occupancy	90%
Daily usage	30 × 1.5 × 0.9 ≈ 41 sheets
Loop time (in use, collection, laundry, return)	3 days → 123 sheets
Ward shelf stock (1 day plus buffer)	50 sheets
Reserve (for peaks and losses)	40 sheets
Total flat sheets	213
Par per bed	about 7

The same calculation for fitted sheets, draw sheets, pillow covers, blankets and towels will give different answers, because they are changed at different rates.

What pushes par levels up or down

Laundry turnaround

The single biggest lever is how long linen spends away from the ward. A laundry that returns linen the next day needs far less stock in the loop than one that returns it in three or four days. If you are deciding between running your own laundry and outsourcing it, factor the turnaround into the stock you would need. See in-house vs outsourced hospital laundry.

Weekends and holidays

If the laundry does not collect or deliver on certain days, the ward shelf has to carry enough stock to bridge the gap. Plan for the longest gap, not the average.

Losses

Every item lost or condemned has to be covered by reserve until it is replaced. High losses mean either a bigger reserve or more frequent top-up orders. Tackling losses directly is usually cheaper; see reducing hospital linen losses.

Ward type

Intensive care, maternity, paediatrics and wards with many incontinent or highly dependent patients use more linen per bed. Day-care units may use more per patient but fewer per bed-day. Calculate each ward type separately.

Lead time on replacements

If replacement stock takes time to arrive, the reserve must cover losses for that whole period. When ordering from a supplier who makes linen to order and ships it, the reserve needs to cover production and shipping time as well.

Splitting par between ward and central store

Knowing the total is only half the job. You also need to decide where the stock sits. Two common arrangements are:

• Ward top-up (imprest). Each ward has an agreed shelf quantity for every item. Linen staff count the shelf on each round and top it back up to that figure from the central store. Wards never order; they are simply replenished. This keeps shelves predictable and makes shortages visible quickly.
• Ward ordering. Wards request what they think they need. This is simpler to start but tends to drift towards over-ordering and hoarding, because no one wants to run out.

Most hospitals find a top-up system easier to control. Whichever you use, keep the reserve in one central place rather than spread across ward cupboards, so it can be moved to wherever demand appears. Record the agreed ward shelf quantities on a sheet inside each linen cupboard so that staff covering a shift know what "full" looks like.

Checking and adjusting par levels

A par level is a starting estimate. Check it against reality:

• Daily shortages on a ward, or staff borrowing from other wards, suggest the par is too low or the distribution is wrong.
• Overflowing cupboards and old stock at the back of shelves suggest it is too high, or that wards are hoarding.
• A falling total count between stock-takes means losses are eating into the reserve.

Review par levels when wards change bed numbers, when the laundry contract changes, or at least once a year. Regular counts make this possible; see hospital linen inventory management for counting routines.

A short checklist before you order:

• Par calculated separately for each item and each ward type
• Laundry turnaround and longest delivery gap confirmed
• Loss rate measured from real counts, not guessed
• Reserve covers losses through the full replacement lead time, including shipping
• Storage space checked for the total quantity

Ordering to your par level

Once you know the par, the order quantity is the par per bed multiplied by beds, minus usable stock you already hold. MISHAREN makes flat and fitted sheets, draw sheets, pillow covers, bed covers, blankets and towels to order at its own production unit in Konni, Kerala, India, and ships them to the UAE for delivery across all seven emirates. Shipping time is part of the lead time confirmed in each quotation, which is worth building into your reserve.

Send your item list and quantities via the contact page, or see the hospital linen range.