NurseNet Clinical Skills

Specimen Collection for Student Nurses

Learn the principles of collecting common clinical specimens safely, including correct patient identification, avoiding contamination, labelling, documentation, storage and transport.

Explore specimen collection

Safe specimen collection

Identify Confirm the correct patient and test.

Collect Use the correct container and technique.

Label Ensure specimen details are complete and accurate.

Protect Avoid contamination and manage exposure risks.

Send Store and transport the specimen correctly.

Why it matters

A specimen is only useful if it is collected correctly.

Clinical specimens are collected to provide information that can help with diagnosis, monitoring and treatment decisions. Examples include urine, stool, sputum, wound swabs and other samples requested as part of a patient's care.

Poor collection technique, incorrect labelling, contamination or delays in transport can reduce the quality of the sample and may lead to a misleading or unusable result.

Student nurses should therefore understand the whole process, not just the moment the sample is obtained.

Think of specimen collection as a chain: correct patient, correct sample, correct container, correct label and correct transport.

Before collection

Prepare before obtaining the sample

Always follow the specimen collection procedure and laboratory guidance used by your organisation.

Confirm the request

Understand which specimen is required, why it is being collected and whether there are specific timing or collection requirements.

Identify the patient

Follow the required patient-identification procedure before collecting or labelling any specimen.

Explain the procedure

Explain what is needed, provide appropriate privacy and answer the patient's questions where possible.

Choose the correct container

Different specimens may require different containers, preservatives or transport media.

Gather equipment

Prepare everything needed before collection to reduce interruptions and contamination risk.

Assess infection risk

Perform hand hygiene and select PPE according to the expected exposure risk and local policy.

Common specimens

Examples you may encounter on placement

Collection technique varies by specimen. Always follow the specific procedure used in your clinical area.

Specimen	Key collection point	Common student consideration
Urine	The collection method depends on the requested test.	Use the correct container and reduce contamination where a clean or midstream sample is required.
Stool	Collect the required amount using the approved specimen container.	Avoid contamination with urine, toilet water or inappropriate materials.
Sputum	A true respiratory specimen is required rather than saliva.	Explain the technique clearly so the patient understands what sample is needed.
Wound swab	Follow the approved wound and swab technique.	Use appropriate aseptic principles and ensure the correct site is documented.
Screening swab	The body site and collection method depend on the screening request.	Check the requested site carefully and label the specimen accurately.

Step-by-step

A safe specimen collection process

Although individual procedures differ, the same safety principles apply to most clinical specimens.

Confirm exactly what is required

Check the specimen type, collection instructions, container and any timing requirements before beginning.

Prepare the patient and environment

Explain the procedure, protect privacy and gather all required equipment before collection.

Collect using the correct technique

Follow local guidance and avoid unnecessary contact that could contaminate the specimen.

Secure the container

Close the specimen container correctly and check for leakage or contamination of the outside surface.

Label accurately

Follow local policy for patient identifiers, specimen details, date, time and collection site where required.

Store and transport appropriately

Send the specimen using the required packaging, transport system and timeframe so its quality is maintained.

Avoid contamination

Why collection technique matters

Contamination can make a specimen difficult to interpret and may lead to unnecessary repeat testing.

Do not touch inside surfaces

Avoid touching the inside of specimen containers, lids or other protected parts unless the procedure specifically requires it.

Use the correct collection method

A poor sample can produce misleading results even when the laboratory test itself is performed correctly.

Keep the outside clean

Prevent contamination of the external container and follow local procedures if spillage occurs.

Avoid unnecessary delay

Some specimens need prompt transport or specific storage conditions to maintain their quality.

Check the site

For swabs and site-specific specimens, ensure the correct anatomical site is sampled and recorded.

Ask when unsure

If the requested specimen or technique is unfamiliar, check the procedure before collecting the sample.

Labelling

Correct labelling is a patient-safety issue

A well-collected sample can still become unusable or unsafe if it is labelled incorrectly.

Use the patient identifiers required by your organisation.
Check the specimen matches the intended patient before it leaves the bedside or collection area.
Record the specimen type and collection site where required.
Record the date and time of collection when required.
Complete electronic or paper laboratory requests accurately.
Never guess or correct unclear specimen details without following local policy.

Treat specimen labelling with the same care as medication identification: the result must belong to the right patient.

After collection

Finish the process safely

Dispose of waste

Dispose of used equipment using the appropriate clinical waste or sharps stream.

Perform hand hygiene

Complete hand hygiene at the appropriate point after specimen handling.

Document collection

Record the specimen and any relevant observations according to local practice.

Arrange transport

Place the specimen in the required packaging and send it through the correct transport pathway.

Report concerns

Escalate difficulty obtaining the sample, contamination, spillage or another collection problem when appropriate.

Follow up appropriately

Understand how results are reviewed and ensure urgent findings are acted on through the local clinical process.

Patient safety

When should you stop and check?

Do not continue with a specimen if something about the request, patient, container or labelling is unclear.

Correct uncertainty before the sample is sent.

Seek advice if you cannot confirm the patient, the requested sample is unclear, the specimen has been contaminated, the wrong container has been used, the label is incomplete or the sample has not been stored or transported correctly.

Student nurse focus

How to become confident with specimen collection

Confidence develops when you understand why different samples require different collection and transport methods.

Learn where specimen containers are stored in your placement area.
Check which containers are used for common tests.
Practise explaining sample collection clearly to patients.
Learn the local labelling and laboratory request process.
Know how specimens are transported from your clinical area.
Ask for supervision whenever the collection technique is unfamiliar.

The goal is not simply to obtain a sample. The goal is to obtain the right sample from the right patient and make sure it reaches the laboratory in a condition that can produce a useful result.

Next clinical skill

Next: Falls Risk Assessment and Prevention.

The next NurseNet guide explores how student nurses can recognise falls risk, reduce avoidable hazards and support safer mobility.

Continue to falls prevention