B Sample Urine Drug Test (Independent Laboratory Analysis)

Description

Why choose MHE Labs for B sample urine testing?

• UKAS accredited, ISO/IEC 17025:2017 (Lab No. 22610). Please refer to UKAS.com for our current scope of accreditation. This service is suitable for disputing / corroborating the results of a workplace drug test.
• Same‑day results for urine confirmations as standard (LC‑MS/MS) if received on a weekday before noon.
• EWDTS guideline compliant with full chain of custody.
• RISQS approved supplier (ID 9895) with proven delivery to Network Rail standards.
• Trusted across high‑risk sectors: rail (RISQS), construction, energy, manufacturing, transport and logistics, local government, healthcare and HM Armed Forces (including the Army and Navy).
• Medical Review Officers available on request for rapid clinical review (typically within 48 hours, subject to donor availability).
• Nationwide collections, secure logistics and managed release of B samples from the original testing laboratory.

What is a B sample urine test?

In workplace drug testing, split specimens are collected to allow an independent re‑test. The A sample is tested initially, but in the event of dispute / appeal, the B sample is available for testing. If the original A sample result is challenged, the B sample will have remained sealed under controlled conditions and can be released to an independent UKAS accredited laboratory for verification.

A properly managed B sample analysis:

• Confirms or refutes the A sample finding using an independent workflow and instrumentation.
• Preserves fairness for donors and assurance for employers.
• Supports internal HR processes, union engagements, disciplinary hearings and, where relevant, tribunal or court proceedings.

Who uses our B sample urine testing / confirmation services?

• Employees / private individuals who wish to dispute a workplace drug test result.
• Safety‑critical industries (rail/transport, utilities, construction, offshore, aviation, highway maintenance, traffic management, manufacturing and more).
• Large multi‑site employers with workplace drug testing policies.
• Occupational health providers.
• Public sector organisations.
• HM Armed Forces and associated contractors.
• Legal representatives supporting employment disputes.

B Sample Confirmation Turnaround Times

• Urine B sample confirmations: same working day upon receipt of the sealed sample (standard service).
• Turnaround times rely on the cooperation of the A sample laboratory to provide a swift release of the sample B specimen.
• Expedited scheduling and out‑of‑hours receipt can be arranged—please contact us.

Pricing

• First drug/analyte in urine: £99 + VAT
• Each additional drug/analyte (within our accredited scope): £65 + VAT
• Courier collection from the releasing laboratory: included in the above pricing when we manage release and collection.
  Note: For drugs outside our current scope, we will advise options via accredited referral partners prior to proceeding.

Accreditation and standards

• UKAS accreditation to ISO/IEC 17025:2017 for urine workplace drug confirmation testing.
• Full adherence to European Workplace Drug Testing Society (EWDTS) Guidelines.
• RISQS audited and approved; work routinely delivered to Network Rail standards.
• Comprehensive chain of custody from release to reporting, with traceable Unique Identifier Numbers and audit trails.

Common B sample urine test panels

We can confirm individual analytes or tailored panels in line with your A sample results.

Typical confirmations can include:

• Amphetamines
• Cannabis (THC-COOH in urine)
• Cocaine and metabolites (including Benzoylecgonine)
• Opiates (including Morphine, Codeine, 6-MAM where applicable)
• MDMA / Ecstasy
• Methadone and EDDP
• Methamphetamines
• Benzodiazepines (e.g., Tiazepam, Temazepam, Oxazepam, Lorazepam) and others within the scope of our accreditation.
• Ketamine and metabolites
• Tramadol
• Other policy‑specific targets on request
  Please contact us for our current UKAS-accredited analyte list and any sector‑specific requirements (e.g., Network Rail panel).

How the B sample urine process works

Initiate a challenge

• Inform the organisation that hold the A sample result that you wish to challenge via a B sample re‑test.
• Request the releasing laboratory’s B sample release form. This form typically requires signatures from the donor (employee/service member) and the original commissioning organisation (employer/authority).
• Copy MHE Labs (info@mhe.ltd) on all correspondence so we can coordinate promptly with the A Sample Laboratory.

Nominate MHE Labs as the receiving UKAS laboratory

Use the following details on the release form:

• Medical, Health and Education Ltd (MHE Labs)
• 46–48 Grove Street, Swadlincote, DE11 9DD, United Kingdom
• Tel: 01283 375093
• Email: info@mhe.ltd
• UKAS Lab No.: 22610 (refer to UKAS.com for scope)
• RISQS Supplier ID: 9895

We arrange secure collection

• We will provide the releasing lab with pre‑addressed labels and schedule our approved courier.
• Collections are typically booked one working day in advance of collection, but depend on the A sample laboratory for a timely release of the sample.
• To protect specimen integrity, we avoid Friday transport where refrigeration could be impacted during transit.

Chain of custody and receipt

• On receipt, the sealed B sample is inspected, logged and assigned a Unique Identifier Number.
• Chain of custody is maintained throughout analysis and reporting.

Analysis and reporting (same‑day)

• LC‑MS/MS confirmation is performed in line with EWDTS and our accredited methods.
• You receive:
• Certificate of Analysis with “Consistent” or “Not Consistent” designation, as per EWDTS requirements.
• This can be supplemented with Laboratory interpretation drafted by our scientists, but the report format itself is fixed due to EWDTS requirements.

Important handling guidance:

• Ensure the release form is fully completed and signed by all required parties.
• Share any policy documents, medication declarations and timing information that may be relevant to interpretation.

Sectors and compliance frameworks we support

• Rail: RISQS approved, Network Rail standards, safety‑critical roles.
• Defence: experience supporting HM Armed Forces (Army, Navy) requirements.
• Construction and infrastructure: CSCS/contractor compliance.
• Energy and utilities: D&A for operational and field roles.
• Logistics and transport: including random and post‑incident testing.
• Healthcare and public sector: policy‑aligned and defensible outcomes.
• National Highways “Raising the Bar” compliant.

Documentation you receive

• UKAS/EWDTS‑compliant confirmation report and interpretation.
• Where requested, MRO opinion and supporting notes.
• Data handled under our GDPR Privacy Policy and Confidentiality Policy.

Quality, confidentiality, and complaints

• Confidentiality: We operate under a strict Confidentiality Policy and GDPR controls. Access is role‑based and reports are encrypted before release.
• Complaints: Our Complaints Policy provides a transparent, time‑bound procedure with clear escalation routes and independent review options. If you have concerns, visit our Complaints Policy page for process and timelines.

Frequently asked questions

• Can you test my B sample for a single drug only?
  Yes. Many challenges concern one analyte; we confirm a single target or a full panel as per your A sample results.
• Will my result be accepted for internal hearings or tribunals?
  Our confirmations are UKAS accredited and EWDTS compliant, with full chain of custody and expert interpretation suitable for HR processes, disciplinary hearings, and where applicable, legal scrutiny. The report itself states “Consistent” or “Not Consistent” with the A sample analysis, but we can provide additional information if levels are required for information purposes only.
• How quickly can I get results?
  Over 99% of results are provided the same working day as the receipt of the sealed B sample at our laboratory.
• Can you manage everything with the releasing lab?
  Yes. We coordinate release paperwork, labels, courier booking, receipt, testing and reporting.
• Do you offer expert witness or MRO review?
  MRO review is available on request. For contested cases, we can support reporting suitable for legal contexts and signpost to expert witness support where required.

How to proceed

1. Make payment via the shopping cart button at the top-right of this page.
2. Initiate the B sample release:

• Ask the original testing laboratory for their B sample release form.
• Complete and sign with all parties; nominate MHE Labs as the receiving laboratory.
• Copy us into the email (info@mhe.ltd) so we can arrange secure courier collection.

Related services

• Workplace urine screening and confirmations (same day)
• Oral fluid screening and confirmations (48 hours via referral lab)
• On‑site collections nationwide (both 2 hour emergency response and pre-arranged collections)
• Training and technical support
• Hair testing and sample B blood analysis via accredited referral partners

About MHE Labs

• UKAS accredited ISO/IEC 17025:2017 (Lab No. 22610)
• ISO 9001:2015 (Certificate No. 354182020)
• RISQS Supplier ID 9895
• Member of the European Workplace Drug Testing Society (EWDTS)
• Award‑winning UK laboratory for innovation and best use of technology

Ready to challenge an A sample result?

Purchase via the shopping cart buttons at the top of the page, or Email info@mhe.ltd or call 01283 375093. We’ll coordinate the release, collect your sealed B sample and deliver a same‑day, UKAS accredited answer you can rely on.