Lesson · 22 min

Specimen Handling and Point-of-Care Testing

Label, store, and transport specimens correctly, and understand the regulations governing testing in the office.

By the end of this lesson you can

Label and handle specimens to preserve integrity
Maintain chain of custody where required
Explain what CLIA is and what waived testing means
Perform quality control on point-of-care tests

📘 Reading Lesson

Lesson Notes

Read through the key concepts before you try the challenge.

A specimen is only as good as its label

On the job

You process specimens at Lakeside Medical Associates.

Two specimens collected in the same fifteen minutes are labelled at the desk afterwards rather than at the bedside. One patient receives a result belonging to the other. Both results are plausible, so nothing looks wrong until treatment fails.

Your task: Label at the point of collection, in the patient's presence, every time.

Element	Detail
Patient name	Full legal name as in the record
Second identifier	Date of birth or medical record number
Date and time of collection	Some tests are time-sensitive
Collector's initials	Accountability and follow-up
Specimen type and site	Where relevant — which site, which side

Specimen labelling requirements

Label in the presence of the patient, immediately after collection, before leaving the room. Never pre-label containers before collection, and never carry unlabelled specimens to a desk to label later. Both practices are how specimens are switched, and a mislabelled specimen means a patient is treated on someone else's results.

CLIA — the Clinical Laboratory Improvement Amendments — regulates all laboratory testing on human specimens in the United States. Every site performing testing needs a CLIA certificate, and tests are categorized by complexity: waived, moderate, and high.

Aspect	Detail
What it is	Tests simple enough that the risk of erroneous results is negligible
Examples	Urine dipstick, rapid strep, blood glucose meters, rapid influenza
Who may perform	Trained unlicensed personnel, including MAs, under the practice's certificate
Still required	Follow the manufacturer's instructions exactly; run quality controls; document

CLIA-waived testing

Waived does not mean casual. A test loses its waived status the moment you deviate from the manufacturer's instructions — using an expired cartridge, altering an incubation time, or reading a result outside its valid window. At that point the practice is performing non-waived testing without authorization, which is a regulatory violation as well as a clinical risk.

Quality control confirms the test system is working before patient results are trusted. Run controls at the frequency the manufacturer and your policy require, record the results, and if a control fails, stop testing patients on that system until it is resolved. A failed control that is repeated until it passes is not a resolution.

Check your understanding

A rapid strep test kit's control fails. What should you do?

Challenge

Apply what you've learned in this lesson.

Understand the regulations governing what your practice may test.

Find the CMS list of CLIA-waived tests. Identify five commonly performed in a family practice.
For a rapid strep test you research, list every manufacturer requirement — storage, expiration, incubation time, reading window.
Write a specimen labelling procedure that makes a mix-up structurally difficult rather than merely discouraged.
Research chain of custody. Explain in three sentences when it is required and what it demands.

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