Flow cytometry services: what a provider should do for you, how flow cytometry panel design and panel design flow cytometry work are split between you and them, what stays yours, and the controls that make outsourced data interpretable
Outsourcing flow cytometry works well when the provider designs or validates the panel, runs standardised instruments and returns both the analysis and the underlying files. It works badly when samples arrive degraded, when the controls were not agreed in advance, or when only a summary comes back. The logistics matter as much as the cytometry. This page covers what to agree before the first sample ships.
- the FDA cGMP rule that applies once material is destined for a drug product
- Part 211
- the ICH guideline on deriving and characterising cell substrates
- Q5D
- good laboratory practice for nonclinical studies, 21 CFR
- Part 58
Figures in this panel are the rules a contract biologics service is bought and audited against, named from the regulations and guidelines themselves and linked in the sources below. They are identifiers, not prices: BioBricks publishes verified prices for synthesis services only, and does not imply a services index it has not measured.
- 4 vendor service pages verifiedevery figure matched verbatim to the vendor's page
- Quoted and dated, never estimatedlast verification pass 2026-08-24
- 1 service classes coveredeach with measured search demand behind it
What to agree in advance
- Panel design and who owns it. Establish whether the provider designs the panel, validates one you supply, or runs an existing catalogue panel, and who owns the design afterwards. A panel is a real piece of work and its ownership should not be discovered at the end of a study.
- Sample type, stability and shipping. Fresh whole blood, isolated cells and fixed samples each have a stability window and a shipping requirement, and a sample outside its window produces data that looks real and is not. Agree the window, the shipper, the courier and what happens to a late arrival before anything ships.
- Controls, agreed and paid for. Single stain compensation controls, fluorescence minus one controls where gates are ambiguous, viability discrimination and an isotype or biological negative where appropriate. These consume samples and instrument time and must be in the scope rather than assumed.
- Instrument standardisation across a long study. For a study running months, ask how the provider standardises instruments over time with beads and how a service event or a laser replacement is handled. Without that, drift becomes an apparent biological effect.
- Data delivery, including the raw files. Require the raw acquisition files as well as the analysis, with the gating strategy documented. A summary table alone cannot be re-examined, and re-analysis is exactly what you will want when a result is surprising.
Gating is an interpretation
Where gates are placed changes the numbers, and two competent analysts can gate the same file differently. Agree the gating strategy up front, require it documented, and have the same analyst or the same automated approach applied across a study.
For anything comparative, ask whether analysis can be blinded to group. It costs nothing and removes a class of criticism that is otherwise hard to answer.
In house or outsourced
Outsourcing suits occasional work, panels beyond your instrument's configuration, and studies needing standardisation you cannot provide. Keeping it in house suits routine work and anything where the turnaround of shipping would slow the science.
A common arrangement is routine panels in house and large or complex panels outsourced, which keeps the skill in the laboratory while buying capability it does not own.
Common questions
- What should a flow cytometry service deliver?
- The analysis, the documented gating strategy and the raw acquisition files, along with the control data. A summary table alone cannot be re-examined when a result is surprising.
- What controls should be in the scope?
- Single stain compensation controls, viability discrimination, fluorescence minus one controls where gates are ambiguous, and an appropriate negative. They consume sample and instrument time, so they must be priced rather than assumed.
- How do samples need to be shipped?
- According to the stability window for that sample type, with an agreed shipper and courier and a written plan for a late arrival. A sample analysed outside its window produces plausible data that is not valid.
- How is drift handled over a long study?
- By standardising the instrument with beads on a defined schedule and recording it, with a documented approach to service events. Without that, instrument drift appears as a biological effect.
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Sources
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The median advertised gene synthesis price per base pair in the US research synthesis services market was $0.11 in August 2026, across 4 verified vendor service pages recorded in BioBricks Synthesis Price Index.
Cite as: "BioBricks Synthesis Price Index", updated 2026-08-24, https://biobricks.org/flow-cytometry-service/.