A laboratory SOP writer that keeps to your validated method and your numbers

A laboratory SOP has one job: two analysts on different days follow it and get results that can be compared. That depends on details a general writer cannot know, such as the validated range, the QC acceptance limits and the rounding rule. INKFLOW drafts laboratory SOPs from the method and records your lab already holds.

Call it a laboratory SOP in your brief and say whether you work under ISO/IEC 17025 accreditation, GLP, GMP quality control or none of these. That choice decides the conventions the draft follows. The writer then asks for what a bench method needs: instruments and asset numbers, reagents and reference materials, the step sequence as performed, calculations and uncertainty.

To be plain about it: the draft is written only from your approved data. Any value your material does not give, whether a limit, an interval or an uncertainty figure, is left as a marked placeholder. It does not validate a method or certify compliance with any standard, and it must go through your own quality approval before use.

Start a laboratory SOP Revise our lab SOPs

Turning a bench method into a laboratory SOP

1
Start with the method source
The standard method or your in-house method, with the reference of its validation or verification report. The SOP states what it is based on, so it is never stretched beyond that.
2
Describe the bench as it really runs
The sequence analysts actually follow, including instrument checks and system suitability, with the makes, models and software versions in use.
3
Give the numbers you have approved
QC blanks, controls, duplicates and spikes with their frequencies and limits, calculations with a worked example, and your uncertainty value or the reference of its budget.
4
Route it through your quality system
The quote comes before payment. Your quality manager and a competent analyst review the draft, then it is approved and issued under your own numbering scheme.

How a laboratory SOP draft is laid out

Scope you cannot stretch

Sample types, matrices, measuring range and exclusions at the top, so the method is not applied to work it was never validated for.

Traceable materials

Reagent grades, suppliers and reference materials with their certificates, so a reviewer can follow any result back to its inputs.

QC with an action on failure

Each check says what happens when it fails, not only the limit, because that is where SOPs most often go quiet.

Records mapped to steps

Every step points to the worksheet or LIMS field that records it, along with how results are reviewed and approved and how raw data is kept.

Data integrity in your own rules

Corrections, true copies, audit trails and notebook control written from your site rules, so attributable, legible and contemporaneous records are concrete instructions rather than a slogan.

Safety at the step

Hazards, COSHH assessment references, PPE, containment level and waste routes, with each warning placed before the step it concerns.

What the laboratory SOP writer will not decide

It will not choose acceptance criteria, estimate measurement uncertainty or set calibration intervals. Those come from your validation work and your quality system, and inventing them would undermine the very thing an assessor checks.

It is also independent of any accreditation body. A draft from INKFLOW is not a UKAS document and carries no accreditation status; the SOP becomes controlled only when your laboratory approves and issues it.

Questions

Does it suit GLP or GMP QC labs as well as ISO/IEC 17025?

Yes, say which applies in the brief. The quality framework changes how review, approval and records are written, so the draft follows the one you name.

Can it write our method validation report?

That is not what this kit drafts. The SOP cites your validation or verification report by its reference; the report and its data stay with you.

Our current SOPs are inconsistent. Can they be brought into one format?

Upload them to be revised. Values and limits are kept exactly, the structure is made consistent, and anything unclear is flagged for your quality manager.

Will it fill in calibration intervals for our instruments?

No. Intervals and providers come from your calibration arrangements. Leave them out and each one appears as a placeholder in the maintenance section.

Do prices include VAT?

Prices include any VAT; nothing is added at checkout.

We are an organisation. How can we pay?

Single orders are paid by card at checkout. For subscriptions and repeat orders, care homes, councils and businesses can ask about paying by Direct Debit or standing order at app.inkflowstudio.org/organisations.

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