GVS - Genuine Verification Services
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Drug test and substance screening

Panel testing through a collection network and an accredited lab, on written consent, with a non-negative result always confirmed before it is ever reported.

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What a drug test confirms

A drug test screens a candidate against an agreed panel of substances, through a collection network and an accredited lab. Nothing is reported as positive on a single test: any non-negative screen goes to confirmatory testing first. Consent, chain of custody and the candidate's dignity through the process matter as much as the result.

Screening result

Negative, or non-negative against the panel agreed for the role, from the first test.

Confirmatory result

Any non-negative screen is retested at the lab with a more specific method before it is ever reported as positive.

Chain of custody

An unbroken, documented handling record from collection to result, so a finding stands up if it is challenged.

Collection record

Date, time and method of collection, recorded as part of a defensible process.

Refusal or tamper flags

A refusal, substitution or adulterated sample is recorded as its own outcome, distinct from a positive result.

What the employer receives

A result status. Not a substance-by-substance readout, and not any unrelated medical information the process happens to surface.

Sources. A collection point in the partner network, and an accredited lab for screening and any confirmatory test. The chain-of-custody record travels with the sample and is annexed to the result.

Two tests, not one

A screen and a confirmatory test answer different questions, and a report only calls something positive once both agree.

First pass

Screening test

A rapid test against the agreed panel, run at or shortly after collection.

  1. Tests for the substances agreed for the role.
  2. Returns a negative result, or a non-negative result pending confirmation.
  3. A non-negative screen is never reported to you as a positive result on its own.
Before anything is reported

Confirmatory test

Triggered automatically by any non-negative screen, run at the lab with a more specific method.

  1. Uses a more specific laboratory method than the initial screen.
  2. Gives the candidate the chance to provide a legitimate medical explanation, such as a prescription.
  3. Only a confirmed result is reported to you, alongside the screening result it followed.

How it works

Four steps, built around chain of custody rather than speed.

Consent and panel agreed

The candidate gives written consent, and the panel is agreed for the role before collection.

Sample collected

Collected through the partner network at a point convenient to the candidate, under a documented chain of custody from the first handoff.

Screened, and confirmed if non-negative

Any non-negative screen goes to confirmatory testing at the lab before it is treated as anything more than pending.

Result published

A result status, with the chain-of-custody record annexed to the case.

Checks that run alongside it

Questions we get asked

What happens if a candidate refuses the test?
It is recorded as a refusal, not as a positive result. What a refusal means for the role is your decision, and the report keeps the two outcomes distinct.
Is a single non-negative result reported as positive?
No. Every non-negative screen goes to confirmatory testing at the lab, using a more specific method, before anything is reported as positive.
What does the employer actually see?
A result status: negative, positive, refused or invalid. You do not receive a substance-by-substance breakdown or any unrelated medical information the process turns up.
Does the candidate pay for anything?
No. GVS never charges a candidate for a check, including this one.
What substances are tested for?
The panel is agreed with you for the role before testing starts, rather than fixed sitewide.
How long does it take?
It depends on scheduling a collection slot through the network, and confirmatory testing adds time whenever a screen is non-negative. The committed number for your roles is set when the package is scoped.

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Send us a pilot batch and judge us on the first report.

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