DOT Urine Specimen Collection Procedure: Step-by-Step Guide

A DOT urine drug test is only legally valid if the collector follows every step of the federal collection procedure exactly as written. Miss a temperature check, skip a signature, or leave the collection area at the wrong moment, and the entire specimen can be voided — putting the employer out of compliance and exposing you to removal from the qualified collector list. This guide walks through the complete DOT urine collection procedure, step by step, as required by 49 CFR Part 40, Subparts E through H.

What Does the DOT Urine Collection Procedure Cover?

The DOT urine collection procedure is governed by 49 CFR Part 40, Subparts E through H. Subpart E establishes collector qualifications and training requirements. Subpart F (§§ 40.61–40.73) contains the step-by-step collection sequence that every certified collector must follow. Subpart G (§§ 40.81–40.103) covers Federal Custody and Control Form (CCF) completion, and Subpart H (§§ 40.111–40.115) addresses packaging and shipping the sealed specimens to the laboratory.

The procedure applies to all DOT-regulated urine drug tests — pre-employment, random, reasonable suspicion, post-accident, return-to-duty, and follow-up. Each test type follows the same collection sequence. The only variation is in observed vs. non-observed status, which affects whether the collector directly observes the specimen provision.

What Must Happen Before the Collection Begins?

Before the donor arrives, the collection site must be properly configured. Under § 40.61, the collector is responsible for ensuring the site is secured against tampering and substitution:

• Bluing agent in the toilet — Add toilet bluing agent to the tank or bowl to prevent the donor from using toilet water to dilute or substitute the specimen. If the toilet does not have a tank (e.g., a flush-valve toilet), ensure the bowl water is visibly blue.
• Secure water sources — Turn off or tape over the sink faucet and any other accessible water sources in the collection area. If the faucet cannot be turned off, the collector must directly observe the collection.
• Specimen collection cups — Have the correct DOT-approved single-use specimen collection container ready. The container must have a temperature strip capable of reading the 90°F–100°F range.
• Federal CCF — Have a current, unaltered Federal Custody and Control Form ready. CCFs must be current-edition forms supplied by or approved by the employer’s MRO or TPA. An expired or altered CCF is a fatal flaw.
• Collector credentials — Confirm you are currently qualified to perform DOT collections. You must have successfully completed training and at least five error-free mock collections (or observed five live collections under a qualified trainer), plus any required re-qualification if you have had a gap in collection activity.

No collection may begin until the site is properly secured. Starting a collection in an improperly prepared site — even accidentally — can invalidate the specimen.

Step 1 — Donor Identification

Under § 40.61(a), the collector must verify the donor’s identity before proceeding with any collection steps. Acceptable forms of identification include:

• Government-issued photo ID (driver’s license, state ID card, passport, military ID)
• Employer-issued photo ID badge
• Positive identification by an employer representative — an authorized DER (Designated Employer Representative) may vouch for the donor’s identity in person at the collection site

If the donor has no acceptable ID: The collection cannot proceed until identity is verified. Contact the DER. The DER may come to the site to make the positive ID, or the donor may be sent away and rescheduled. Document the situation in the remarks section of the CCF. Do not collect a specimen from an unidentified donor under any circumstances.

Step 2 — Pre-Collection Instructions

Once identity is confirmed, instruct the donor to prepare for the collection (§ 40.61(b)–(c)):

1. 1Remove outer garments. Instruct the donor to remove coats, jackets, coveralls, or other bulky outer clothing and leave them outside the collection area. This prevents the donor from concealing substitution devices.
2. 2Empty pockets. Ask the donor to empty all pockets and display the contents. If you observe anything that could be used to tamper with the specimen (e.g., a container of liquid), document the observation on the CCF and consider whether a direct-observation collection is warranted.
3. 3Leave personal items outside. The donor’s purse, bag, briefcase, backpack, and other personal belongings must remain outside the collection area and under the collector’s supervision or in a secured location.
4. 4Wash hands. Direct the donor to wash their hands with soap and water before entering the collection area. This step is specifically required by Part 40. Provide the collection container after the donor washes their hands — not before.

Step 3 — Specimen Provision

Hand the donor the sealed collection container and direct them to the collection area (§ 40.63–40.65). For a standard (non-observed) collection:

• The donor enters the collection area alone and closes the door. The collector remains outside and does not directly observe the void.
• The collector must listen for sounds of normal urination and remain attentive to any unusual noises (running water, extended silence, etc.) that might suggest tampering.
• The minimum required specimen volume is 45 mL — 30 mL for Bottle A (primary) and 15 mL for Bottle B (split). If the donor cannot provide 45 mL in one attempt, the shy bladder protocol under § 40.193 begins. See our shy bladder protocol guide for the complete 3-hour window procedure.
• Once the donor exits, they must hand the specimen container directly to the collector. The collector takes immediate custody. Do not allow the donor to set the container down unobserved.

Step 4 — Temperature Check

The temperature check is one of the most critical steps in the DOT collection procedure and must be performed immediately after receiving the specimen (§ 40.65):

If the temperature is within range: Proceed with the collection. Note the temperature reading in Step 2 of the CCF.

If the temperature is out of range (below 90°F or above 100°F): You must immediately offer the donor the opportunity to provide a second specimen under direct observation. Check the “temperature outside range” box on the CCF and document what you observed. The out-of-range specimen is not discarded — send both the original and the observed specimen to the lab, each with its own CCF, marked accordingly. The MRO will determine the final result. Do not let the donor leave without giving them the opportunity for the observed recollection.

Step 5 — Split Specimen Processing

Once the temperature check confirms the specimen is within range, immediately process the split specimen in full view of the donor (§ 40.67):

1. 1Pour a minimum of 30 mL into Bottle A (primary specimen). Bottle A must be filled first. This is the specimen the laboratory will test.
2. 2Pour a minimum of 15 mL into Bottle B (split specimen). This specimen is held in reserve and is only tested if the donor or employer requests a split retest after a non-negative result.
3. 3Apply the tamper-evident specimen ID labels (from the CCF) to both bottles. The labels must match the specimen ID number on the CCF. Press firmly to seal.
4. 4The donor initials both bottle seals in the collector’s direct view. The collector must watch the donor apply their initials. If the donor refuses to initial the seals, document the refusal on the CCF and proceed — a donor’s refusal to initial is not a reason to cancel the collection.

The collector and donor must maintain mutual observation throughout the sealing process. If either party leaves the area or loses direct sight of the specimen during sealing, the collection must be restarted from the beginning.

Step 6 — CCF Completion

The Federal Custody and Control Form documents the entire collection and maintains the legal chain of custody. For full details, see our DOT chain-of-custody guide. The critical CCF steps at this stage (§§ 40.71–40.73):

• Collector completes Step 2 — Fill in the collection date, collection site address, specimen ID number, temperature reading, and reason for test. Check the appropriate collection type box (single vs. split). Sign and print your name in the collector certification block, certifying that you are a qualified DOT collector and that the collection was performed according to 49 CFR Part 40.
• Collector completes Copy 4 and Copy 5 — Copy 4 is the laboratory copy (stays with the specimen). Copy 5 is the donor copy.
• Donor signs Copy 5 (Step 5) — The donor reads and signs the donor certification statement on Copy 5, certifying that the specimen identified is theirs and was provided to the named collector. The donor must sign before leaving. If the donor refuses to sign, document the refusal on the CCF — this is not a reason to cancel the collection.
• Give Copy 5 to the donor — The donor leaves with their copy. This is the only copy they receive. Do not give the donor any other CCF copies.

Step 7 — Specimen Shipping

Once the donor has left, package and ship the sealed specimens to the HHS-certified laboratory (§§ 40.111–40.115):

1. 1Place both sealed bottles and Copy 4 of the CCF inside the specimen transport bag (typically the biohazard bag provided with the CCF kit). Seal the outer bag.
2. 2Use an approved shipping carrier — overnight courier service or same-day courier as directed by your TPA or employer. Do not use regular U.S. mail for DOT specimens.
3. 3Maintain chain of custody throughout shipping. The carrier accepts the package in a sealed condition — you must not hand over an unsealed shipment. Document the tracking number and shipment date in your collection records.
4. 4Ship specimens to the laboratory on the day of collection whenever possible. If same-day shipment is not possible, store the sealed specimens in a secure, limited-access area (locked cabinet or refrigerator) until they can be shipped.

Retain Copies 1, 2, and 3 of the CCF per your facility’s retention policy. Copy 1 goes to the MRO with the lab results. Copies 2 and 3 are retained by the employer and collection site, respectively, for a minimum of two years.

Which Errors Invalidate a DOT Collection Under 49 CFR Part 40?

Part 40 defines two categories of CCF and collection errors: fatal flaws (which require the laboratory to reject the specimen) and correctable flaws (which can be fixed via memorandum of correction within 5 business days). The following collection errors are serious enough to result in specimen rejection or removal of the collector from the qualified list: