5 Additional Special Specimen Procedures Free Online FlashCards

Why check test-specific instructions before collecting a special specimen?

Check the current instructions for that specific test and laboratory; requirements for containers, preparation, preservation, and transport vary.

How does a typical 24-hour urine collection begin?

At the start time, the patient empties the bladder, discards that first void, and records the time.

What should be done if a void is missed during a 24-hour collection?

A missed void can make the result unreliable. Contact the ordering service or laboratory for direction; do not submit an incomplete collection as complete.

What is an important safety rule for urine preservatives?

Warn the patient about hazards, follow the laboratory’s instructions, and do not discard the supplied preservative or add another substance unless instructed.

What times should be documented for a timed blood sample?

Record the actual collection time and the relevant event time, such as the medication dose or meal—not just the scheduled collection time.

Is every drug-level sample collected at trough?

Some drug levels require a trough sample just before the next dose, but not all do. Never delay, omit, or change a dose without direction from the responsible clinician.

How long without calories does a fasting glucose commonly require?

A fasting glucose commonly requires at least eight hours without calories. Follow the specific order’s instructions and report any deviation.

Why must specimen temperature instructions be followed precisely?

Room temperature, refrigeration, chilling on ice, and freezing are not interchangeable. Use the test directory for the required temperature and permitted handling time.

How does Mayo Clinic Laboratories handle its plasma ammonia specimen?

For this specific test and laboratory, plasma ammonia is placed on ice immediately, processed promptly, and frozen within two hours.

How should a light-sensitive specimen be protected?

Use the specified amber container or other light-protective covering, and maintain the required temperature.

How should a specimen requiring ice be protected from meltwater?

Place it in a closed, leak-resistant secondary container so meltwater cannot reach the specimen.

What identification and timing details belong on a specimen record?

Use the required patient identifiers and record the collection date and time. For timed specimens, also document start and end times when required.