Custom Kitting & Fulfillment
Custom specimen collection kits designed, manufactured, and delivered with precision. From single-test kits to complex clinical trial configurations, DS2 handles kit design, assembly, quality assurance, and nationwide fulfillment so your team can focus on the science.
20M+
Kits Built Annually
99%
On-time Fulfillment
Same Day
Turnaround Available
What is custom kitting?
Custom kitting is the process of designing and assembling individual components, tubes, swabs, containers, labels, instructions, and packaging, into a single, ready-to-use kit built to a customer's exact specification. Instead of a lab ordering a dozen separate items and assembling collection packs by hand, a kitting partner sources every component, assembles it under quality control, and delivers a finished kit that is ready to use the moment it is opened.
In diagnostics and life sciences, that finished kit is usually a specimen collection kit: everything a patient, phlebotomist, or site needs to collect a sample and get it back to the lab intact. The custom part matters because no two testing workflows are identical. Tubes, volumes, additives, labeling, branding, and shipping configuration all change with the test, the sample type, and the end user.
What is kitting and fulfillment?
Kitting and fulfillment combines two functions that are often split across vendors: building the kits (kitting) and storing, picking, packing, and shipping them on demand (fulfillment). Under one roof, a kit can be assembled in controlled batches, held in inventory, and then shipped, individually to a patient's home or in bulk to a collection site, the same day an order comes in.
Keeping the two together is what turns a pile of components into an operational supply chain. When a lab's volume spikes, or a direct-to-consumer brand runs a promotion, the fulfillment layer absorbs it without the customer touching a box.
Solutions for Every Testing Need
100 kits or 100,000, built on the same line with the same quality checks and turnaround discipline.
Kitting & Fulfillment
End-to-end kit assembly and on-demand order fulfillment with same-day turnaround. DS2 manages inventory, assembly, QC, and shipping under one roof so kits arrive ready to use.
Custom Kitting Services
Bespoke specimen collection kits configured to your exact specification, from component selection and packaging design to labeling, branding, and regulatory documentation.
Diagnostic & Lab Kitting
Custom diagnostic and lab kitting built around the specific tubes, transport media, and paperwork each assay needs, for clinical, molecular, and specialty laboratories.
Medical Device Kitting
ISO 13485-certified kitting for medical device manufacturers, with serialized tracking, controlled labeling, and FDA-compliant packaging assembled under a device quality system.
Specimen Collection Kits
Pre-configured specimen collection kits for blood, urine, saliva, swab, and specialty sample types, including at-home collection kits for direct-to-consumer testing brands.
Running a clinical study? See our dedicated clinical trial kitting guide for sponsors and CROs.
Why labs and brands outsource kitting
Building kits in-house looks cheaper than it is. It ties up staff, floor space, and purchasing bandwidth, and puts sample quality in the hands of a manual process.
Consistency & error reduction
Most laboratory errors are made before a sample reaches an instrument. A kit assembled to a validated standard, with the correct tube, additive, label, and packaging every time, designs those pre-analytical errors out before collection.
Scale without the overhead
Build 100 kits or 100,000 with the same consistency, and flex through demand spikes without hiring, training, or leasing warehouse space.
Compliance built in
Specimen and device kits sit inside real regulatory frameworks. A dedicated kitting company runs the quality system, packaging validation, and traceability rather than bolting them on.
Cost & inventory control
Consolidated component sourcing, managed inventory, and less waste from expired or mis-assembled stock usually beat the fully loaded cost of in-house assembly.
One vendor, not five
When the same partner handles kitting, fulfillment, transport, and integration, there is one accountable point of contact instead of a chain of vendors pointing at each other.
Faster turnaround
Kits held in temperature-controlled inventory ship the same day an order arrives, individually to a physician's office, patient's home or in bulk to a collection site.
The strongest argument for custom kitting design and manufacturing is data quality. One landmark study found that 61.9% of laboratory errors occur in the pre-analytical phase, the collection, handling, and transport stage a kit directly controls, so a kit built to a validated standard designs those errors out before a sample is ever taken.
Request a Custom Sample Kit
Custom branded sample collection kits for your preferred matrices: see the components, labeling, and build quality first-hand before you commit.
From Concept to Delivery
A proven four-step process that turns your specifications into quality-assured kits, delivered on time.
Prefer to see the quality first? Request a sample kit.
Consultation & Design
We work with your team to understand testing requirements, specimen types, and regulatory needs. Our kit engineers design the optimal configuration and bill of materials.
Sourcing & Procurement
Through our network of 200+ vetted suppliers, we source every component (tubes, swabs, packaging, labels, and documentation) at competitive pricing.
Assembly & Quality Control
Each kit is assembled in our ISO-certified facility with barcode verification, weight checks, and visual QC at every station. Defect rates below 0.01%.
Storage & Distribution
Temperature-controlled warehousing with automated inventory management. Orders ship same-day via our courier network or integrated carrier partners.
Manage Every Kit in LNK2DS2
Order custom kits, track every shipment in real time, and pull the reports you need, all from one secure portal built for lab operations teams.
Use Every Capability. Reap Every Benefit.
DS2's four core services work as a single, integrated stack: from the kit on the bench to the result in the EMR. Use one and you get a great vendor; use them together and you get a partner.
Custom Kits, Built to Your Protocol
Clinical trial or routine panel, every kit is configured to your exact spec and assembled the same way every batch. Procurement, build, QC, and distribution all happen under one roof, so you spend less time managing vendors and more time running your lab.
Explore KittingConfigured for your workflow
Components, labels, and packaging assembled to your exact spec, and rebuilt the same way every batch, every time.
Quality at every step
FDA-registered facility with documented assembly checks, lot-level traceability, and continuous improvement programs on every kit.
See it all working together
View the full end-to-end solution
Built on a Foundation of Quality
Kitting quality is only as good as the system behind it. Every kit that leaves our facility meets the highest standards of quality and regulatory compliance, so your specimens are collected, packaged, and transported correctly every time. Kits that ship diagnostic specimens are packaged as Biological Substance, Category B (UN3373) under Packing Instruction 650, with compliant triple packaging designed in, not added at the shipping dock (see our UN3373 packaging guide).
Custom kitting questions
What is custom kitting?
Custom kitting is the process of designing and assembling separate components, such as tubes, swabs, containers, labels, and instructions, into a single ready-to-use kit built to a customer's specification. In diagnostics, the finished kit is usually a specimen collection kit that contains everything needed to collect a sample and return it to the lab.
What is the difference between kitting and fulfillment?
Kitting is building the kits; fulfillment is storing, picking, packing, and shipping them on demand. Kitting and fulfillment together means one partner assembles the kits, holds them in inventory, and ships them, individually to patients or in bulk to sites, without the customer handling the logistics.
What types of kits does DS2 build?
Diagnostic and lab kits, specimen collection kits (blood, urine, saliva, swab, and specialty types, including at-home kits), medical device kits, and clinical trial kits. Kits can be standard or fully customized, in volumes from 100 to 100,000 and beyond.
Why should a lab outsource kitting instead of building kits in-house?
Outsourcing improves consistency and reduces pre-analytical errors, scales without adding staff or space, builds compliance and traceability into the process, controls component and inventory cost, and consolidates kitting, fulfillment, and transport under one accountable vendor.
Is DS2's kitting facility certified?
Yes. DS2's kitting is produced in an FDA-registered, ISO 13485:2016-certified, temperature-controlled facility, with cGMP-ready assembly, DOT and IATA dangerous-goods certification, 100% barcode-verified assembly, and full lot traceability.
Can DS2 handle both small and large kit volumes?
Yes. The operation scales from small pilot runs to hundreds of thousands of kits, with same-day fulfillment available and inventory managed so demand spikes are absorbed without disruption.
References
- 1.Carraro P, Plebani M. Errors in a stat laboratory: types and frequencies 10 years later. Clin Chem. 2007;53(7):1338-1342.
- 2.FDA. Quality Management System Regulation (QMSR), effective February 2, 2026 (incorporates ISO 13485:2016).
- 3.FDA. FAQs: Viral Transport Media During COVID-19 (specimen transport media regulated as devices).
- 4.IATA Dangerous Goods Regulations, Packing Instruction 650 (UN3373); mirrored at 49 CFR 173.199.
- 5.Penske Logistics. What is Kitting? Logistics glossary (definition of kitting in supply chain and fulfillment).
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