Bookkeeping for testing laboratories
Samples can arrive in one month and be invoiced after a report is released in the next. Rush fees, outside testing and instrument maintenance can disappear inside monthly totals. Connect work orders to released reports, invoices and payments without putting confidential test results into the financial file. Mispar organizes the agreed monthly bookkeeping in your QuickBooks or Xero file. Plans start at $229/mo.
Best for: Independent materials, environmental and product-testing laboratories, not clinical billing practices.
Reviewed
Completed not billed
Reviewed
Outside-test costs
Reviewed
Credits and retests
Reviewed
Customer aging
Where testing laboratory books usually go wrong
- Test income not matched to the supplies and labor behind it.
- Equipment calibration and certification costs unevenly recorded.
- Rush fees mixed with standard test income.
- Large equipment purchases expensed.
What the books need to show
Industry-specific accounts and categorization, with the reporting scope agreed before work starts.
Work orders and billing
Compare completed test orders with the invoice register. Separate work awaiting billing from invoices awaiting payment.
Expedited test fees
Keep rush charges visible alongside extra labor or outside services so the cost of urgent work is reviewable.
Reference laboratory bills
Connect outsourced tests to the originating order. Identify cancelled, repeated or unmatched supplier charges.
Consumables and shipping
Separate reagents, sample containers, shipping and disposal from office costs. Review purchasing against operational records.
Instrument service and assets
Record calibration, repairs, leases and new equipment separately, preserving purchase documents for asset-policy review.
Credits and retests
Attach credits and nonbillable repeats to the original order so repeated work does not disappear into monthly revenue.
Reports a testing laboratory can use
- Revenue and cost by test type.
- Equipment list with purchase cost and age.
- Calibration and certification cost by year.
- Receivables aging by client.
A simple, predictable process
From kickoff to your first clean close, here is exactly what happens.
Start from the operating records
Review work-order exports, invoice batches, supplier bills and remittances. Confirm the financial exports and references available before agreeing scope.
Agree the account mapping
Set categories for completed not billed, outside-test costs, credits and retests. Confirm inventory, advance-payment and asset policies with your accountant where needed.
Reconcile the activity
Check released work orders against invoices. Match bank and card activity to the supporting records and keep unresolved differences on an exceptions list.
Close with open items visible
Deliver the agreed monthly statements and review missing documents, unpaid balances and unresolved items. Tax, legal and operational decisions remain with the relevant advisers.
Illustrative example
A completed-order export contains a rush test absent from the invoice batch. The exception list gives the billing manager an order to review without exposing its confidential result. This is an illustration of the method, not a customer case or a guarantee.
Testing Laboratories bookkeeping — your questions
How do completed tests get matched to invoices?
Use a work-order export with completion or report-release status, then compare it with billed orders. Operations confirms billability.
Can outside testing charges be assigned to a customer order?
Yes, when supplier bills identify the originating order. Unmatched costs remain exceptions until the reference is supplied.
Do you need the actual laboratory results?
The financial work usually needs order references, fees and status, not detailed test results. Agree the minimum data needed.
Can a paid retest be separated from a courtesy repeat?
Use distinct billable and nonbillable order references, with any invoice credit linked to the original work.
Can you track cost by test type?
Yes. Supplies and labor are tied to the type of test.
What affects the bookkeeping quote for testing laboratories?
Plans start at $229/mo. Transaction volume, account count and the records and reporting needed determine the agreed scope and final quote. Catch-up work is discussed separately.
Customers slow to pay?
Our in-house collections team calls and emails customers who owe your company money, so you can stay focused on the work.