Exam Preparation - Corilab | Esami e Analisi Frascati

Exam Preparation

Corilab > Exam Preparation

When, where, and how should you prepare for each type of test?

All the information you need is provided below.

Proper sample collection, transport, and storage are essential for accurately identifying the microorganisms responsible for infections. Improper sampling procedures may lead to the presence of contaminating bacteria, potentially resulting in an incorrect diagnosis. Failure to follow the instructions below may affect test results and consequently lead to unnecessary or potentially harmful treatments.

Please follow these essential guidelines.

  • Antibiotic therapy: Samples should be collected 7–10 days after completing antibiotic treatment.
  • Containers: Use sterile containers.
  • Transport: Samples should be transported as soon as possible and under conditions that ensure their proper preservation.

Swab Tests

When

Vaginal swabs can be performed at our facility. A biologist will personally perform the swab, taking all necessary precautions.

Vaginal swabs are performed from 9:00 AM to 11:00 AM.

How

Before undergoing a vaginal swab, patients should follow a few guidelines to ensure the reliability of the test results:

  1. Avoid sexual intercourse for 24 hours before the sample is collected.
  2. Do not undergo the test during menstruation.
  3. Do not perform vaginal douching for 24 hours before the sample is collected.
  4. Stop any antibiotic treatment at least 7 days before the test.

If the swab is not performed at our facility, the vaginal sample must be delivered to the laboratory within one hour of collection at the latest, or placed in the appropriate transport medium for up to 24 hours.

For testing for:

  1. Chlamydia trachomatis
  2. Mycoplasma/Ureaplasma
  3. Trichomonas vaginalis

a vaginal swab without transport medium must be used for sample collection and delivered to the laboratory as soon as possible.

A rectal swab may be used instead of a stool sample and may be recommended whenever collecting a stool sample is difficult.

Where

The rectal swab is performed at home.

Results will be available online (if requested at the time of sample collection) from 4:30 PM, or can be collected at our reception desk from 4:30 PM to 7:00 PM.

When

No appointment is required; every morning from 7:30 AM to 11:00 AM.

How

  • Insert the rectal swab 1–2 cm into the rectum and rotate it to collect fecal material.
  • Make sure that visible material has been collected on the swab.
  • Place the swab in the appropriate container and deliver it to the laboratory staff by 10:30 AM.

Where

The throat swab is performed at our laboratory. Results will be available online (if requested at the time of sample collection) from 4:30 PM, or can be collected at our reception desk from 4:30 PM to 7:00 PM.

When

No appointment is required; every morning from 7:30 AM to 11:00 AM.

How

After completing the registration and administrative procedures, patients proceed to the sample collection room, where our nursing staff will perform the throat swab, taking all necessary precautions.

Urine Test

When

Urine samples should be collected first thing in the morning. Results will be available online in the afternoon or can be collected at our reception desk from 4:30 PM to 7:00 PM.

Where

Samples should be collected at home or, in case of an emergency, at our laboratory.

How

  • Unless otherwise specified, it is recommended to collect the first urine sample of the morning.
  • Urine collection containers must be sterile.
  • For an accurate assessment of the results, any antibiotic or antimicrobial treatment should have been discontinued for at least one week.
  • Deliver the biological sample to the laboratory’s sample collection room within two hours.

When

Urine samples should be collected first thing in the morning. Results will be available online 48 hours later or can be collected at our reception desk from 4:30 PM to 7:00 PM.

Where

Biological samples should be collected at home or, in case of an emergency, at our laboratory.

How

  1. Unless otherwise specified, it is recommended to collect the first urine sample of the morning.
  2. Urine collection containers must be sterile.
  3. For an accurate assessment of the results, any antibiotic or antimicrobial treatment should have been discontinued for at least one week.
  4. Deliver the biological sample to the laboratory’s sample collection room within two hours.

When

The urine sample should be collected first thing in the morning. Results will be available online from 4:30 PM (if requested at the time of sample collection) or can be collected at our reception desk from 4:30 PM to 7:00 PM.

Where

Biological samples should be collected at home or, in case of an emergency, at our laboratory.

How

  • Use a urine collection bag for infants, available at pharmacies.
  • Wash the external genital area with soap and water.
  • Apply the adhesive part of the collection bag around the genitals, avoiding the anal area.
  • After the child has urinated, remove the bag and fold it over to seal the opening.
  • If the child has a bowel movement, repeat the procedure described above.
  • Deliver the sample to the laboratory staff by 10:30 AM.

When

The urine sample should be collected first thing in the morning. Results will be available online from 4:30 PM (if requested at the time of sample collection) or can be collected at our reception desk from 4:30 PM to 7:00 PM.

Where

Biological samples should be collected at home.

How

  • Use a sterile container.
  • Clamp the catheter for at least 1 hour.
  • Remove the drainage bag.
  • Remove the clamp.
  • Collect the urine flowing from the catheter tubing directly into the sterile container, taking care not to allow the tubing to come into contact with the sides of the container.
  • Do not collect the urine from the drainage bag and do not disconnect the catheter.
  • Deliver the sample to the laboratory by 10:30 AM on the same day.

Collect the urine in a suitable container available from pharmacies.

  • Start collecting urine in the morning by emptying your bladder and discarding the urine passed.
  • Make a note of the time.
  • Over the following 24 hours (morning, afternoon, evening and night), collect all urine passed using the appropriate plastic container.
  • Keep the container tightly closed and stored in a cool, dark place, preferably in the refrigerator at a temperature between 2°C and 8°C.
  • The collection should end the following morning at the same time it started and must include the urine passed at the end time (the time recorded at the beginning of the collection). Therefore, after 24 hours, the container should contain the entire volume of urine passed.
  • During the collection period, keep the container(s) in a cool, dark place.
  • Deliver all the collected urine to the Sample Collection Point within two hours of completing the collection.

Stool Test

Avvertenze:
L’esame andrebbe eseguito lontano da terapia antibiotica (circa 3/4 giorni dal termine della terapia). Sarebbe opportuno raccogliere un campione emesso spontaneamente senza ricorrere all’uso di lassativi.

When

In the morning, before coming to the laboratory.

Where

Biological samples can be collected at home or, in case of an emergency, at our laboratory.

How

  1. Follow your usual diet.
  2. Collect the sample in a suitable container available from pharmacies.
  3. Try to deliver the sample within 2 hours of collection.
  4. Write your first and last name on the container and hand it directly to the laboratory staff.

It is used as an alternative to a stool sample and may be recommended for patients who have difficulty collecting stool samples.

When

In the morning, before coming to the laboratory.

Where

Biological samples can be collected at home or, in case of an emergency, at our laboratory.

How

  1. Insert the swab approximately 1–2 cm deep and rotate it to collect fecal material, then place it into the appropriate transport medium.
  2. Deliver the properly stored sample within two hours of collection, directly to the staff in the sample collection room.

When

In the morning, before coming to the laboratory.

Where

Biological samples can be collected at home or, in case of an emergency, at our laboratory.

How

  • Gastrointestinal lesions can cause intermittent bleeding, so it is advisable to perform the test on 3 samples collected over three consecutive days. The samples can be delivered each day or all on the same day, keeping them refrigerated at 4°C. Remember to write the collection date on each container.
  • Do not collect the sample if you are using rectal medications.
  • Use a sterile stool collection container with an internal spoon (available from pharmacies).
  • Have a bowel movement into a suitable container, such as a bedpan.
  • Using the spoon attached to the container, collect several portions from the surface of the stool and from different areas (3 or 4) until approximately half of the container is filled.
  • Deliver the stool sample to the laboratory by 10:30 AM. If multiple samples are being collected for testing, they can be stored at home in the refrigerator. Remember to write the collection date on each container.

N.B.
It is no longer necessary to follow a specific diet when testing for occult blood, as immunological methods are used.

Stool culture testing involves screening for Salmonella and Shigella.

When

In the morning, before coming to the laboratory.

Where

Biological samples can be collected at home or, in case of an emergency, at our laboratory.

How

  • The sample should be collected during the acute phase of the infection.
  • Obtain a sterile stool collection container with an internal spoon.
  • Have a bowel movement into a sterilized container, such as a bedpan.
  • Using the spoon attached to the container, collect several portions from the surface of the stool and from different areas (3 or 4) until approximately half of the container is filled.
  • Avoid contaminating the sample with urine or water.
  • It is always preferable to collect any mucous or bloody portions of the stool.
  • Deliver the sample to the laboratory by 10:30 AM and hand it directly to the laboratory staff.
  • Samples cannot be stored at home for several days, as bacteria may die or proliferate excessively.

When

In the morning, before coming to the laboratory.

Where

Biological samples can be collected at home or, in case of an emergency, at our laboratory.

How

Since some intestinal parasites are not shed every day, for accurate results it is advisable to perform the test on at least three consecutive stool samples.

Breath test

The breath test can be used to identify abnormalities affecting the gastrointestinal system.

 

The Breath Test, also known as the “breath test”, is a non-invasive diagnostic test performed by breathing into a tube. It can be used to assess food intolerances or digestive disorders, intestinal transit time, and any abnormal colonization of the intestine by certain bacteria.

There are several types of Breath Tests:

The Breath Test is a diagnostic test performed by analysing samples of exhaled air. The lactose breath test is useful for diagnosing lactose intolerance.

 

THE LACTOSE BREATH TEST TAKES APPROXIMATELY 90 MINUTES

*To obtain reliable results, it is important to follow these instructions.

 

15 DAYS BEFORE THE TEST

Do not take antibiotics, as they may alter the levels of gases in the exhaled air.

 

7 DAYS BEFORE THE TEST

Stop taking the following medications at least 7 days before the test:

  • Prokinetics: metoclopramide, levosulpiride, clebopride, domperidone, prucalopride
  • Laxatives: macrogol, lactulose, magnesium compounds, bisacodyl, senna, sodium picosulfate, mineral oils, linaclotide

Please note: Medication should only be discontinued if clinically appropriate. Do not stop any medication if your doctor has advised you to continue treatment to avoid significant consequences. Never stop taking medication on your own initiative; always consult your doctor before making any changes to your treatment. If you are taking other medications not listed above (e.g. antihypertensive drugs), you may continue taking them as usual.

 

THE DAY BEFORE THE TEST

It is recommended to avoid fermentable foods, which may increase intestinal gas production. In particular, it is advisable to limit the intake of fibre and complex carbohydrates found in bread and pasta (especially wholegrain varieties) and their derivatives, potatoes and other tubers, legumes (beans, chickpeas, lentils), and starchy vegetables (e.g. corn, peas). It is also advisable to avoid dairy products and milk derivatives (cream, béchamel sauce, custards, butter, etc.) and cheeses made from animal milk (cow, goat or sheep); alcoholic or carbonated beverages, sweets and chewing gum.

The following foods are allowed: low-fat yogurt, all soy-based foods, almond milk, rice milk, walnuts, almonds, avocado; light vegetables such as spinach, broccoli, courgettes, lettuce, rocket, cucumber, cherry tomatoes and olives; grilled chicken, eggs, baked salmon, strawberries, kiwi, olive oil and vinegar.

 

THE DAY OF THE TEST

The patient must have been fasting for at least 12 hours (only plain water is permitted).

Smoking is prohibited on the day of the test, as smoking may affect the results.

Brush your teeth thoroughly with a toothbrush and toothpaste. Initially rinse your mouth with a 0.05% chlorhexidine-based mouthwash diluted in water, followed by a second rinse with plain water. Avoid using alcohol-containing mouthwashes, as they may interfere with the accuracy of the test.

It is recommended to avoid physical exertion or strenuous exercise during the test, as hyperventilation may interfere with gas measurements.

Please note: If the preparation instructions have not been followed carefully, the healthcare staff reserve the right to decide whether or not to proceed with the test.

The breath test is a diagnostic test performed by analysing samples of exhaled air. It is a non-invasive test used to diagnose SIBO (small intestinal bacterial overgrowth) and to measure orocecal transit time.

 

THE LACTULOSE BREATH TEST TAKES APPROXIMATELY 4 HOURS

*To obtain reliable results, it is important to follow these instructions

 

15 DAYS BEFORE THE TEST

Antibiotics must not be taken, as they may alter the levels of gases (H₂ and CH₄) in the exhaled air.

 

7 DAYS BEFORE THE TEST

Stop taking the following medications at least 7 days before the test:

Prokinetics: metoclopramide, levosulpiride, clebopride, domperidone, prucalopride

Laxatives: macrogol, lactulose, magnesium compounds, bisacodyl, senna, sodium picosulfate, mineral oils, linaclotide. Please note: Medications should only be discontinued if clinically appropriate. They should not be stopped if your doctor has advised you to continue treatment to avoid significant consequences. Never stop taking medication on your own (e.g. the contraceptive pill): always consult your doctor before making any changes to your treatment. If you are taking other medications not listed above (e.g. antihypertensive medications), you may continue taking them as usual.

 

THE DAY BEFORE THE TEST

On the day before the test, the patient must eat only the following:

  • Breakfast: one glass of tea + 2 rusks
  • Lunch: a small portion of boiled rice, seasoned with a little oil
  • Dinner: a steak or boiled fish.

It is essential that NO fibre-rich foods (fruit, vegetables, pasta, bread) or carbonated beverages are consumed on the day before the test.

 

THE DAY OF THE TEST

On the day of the test, the patient must remain fasting and must NOT smoke, engage in physical activity or sleep during the test.

You may brush your teeth in the morning, but not immediately before the test. Approximately 15 minutes before the test, rinse the mouth with 0.05%-0.2% chlorhexidine.

The breath test is a diagnostic test performed by analysing samples of exhaled air. The urea breath test is useful for diagnosing Helicobacter pylori infections.

The test involves collecting samples of exhaled air following the administration of a solution containing urea labelled with a carbon isotope. In the stomach, in the presence of H. pylori, the labelled urea is broken down into ammonia and carbon dioxide. If carbon dioxide is detected in the exhaled air, this confirms the presence of the bacterium.

 

THE UREA BREATH TEST TAKES APPROXIMATELY 30 MINUTES.

*To obtain reliable results, it is important to follow these instructions.

 

15 DAYS BEFORE THE TEST

Antibiotics must not be taken.

 

7 DAYS BEFORE THE TEST

Stop taking gastroprotective medications belonging to the proton pump inhibitor (PPI) family, such as: Omeprazole, Esomeprazole, Pantoprazole, Lansoprazole, Rabeprazole.

 

THE DAY OF THE TEST

The patient must fast for at least 12 hours (no food or drink).

It is important not to smoke, as smoking may affect the test results.

 

Please note: During the test, no food may be consumed, smoking is not permitted, and physical activity must be avoided. Normal eating and physical activity may be resumed only after the test has been completed.

Scotch Tape Test (Graham Test)

A test used to detect the presence of pinworms in the human intestine. Pinworms are detected in the perianal area using the scotch tape test.

When

First thing in the morning

Where

At home

How

  1. Collect the slide from the LABORATORY.
  2. In the morning, immediately after waking up, apply the adhesive side of a strip of transparent adhesive tape (approximately 7 x 2 cm) to the skin in the perianal area for approximately 10 minutes.
  3. The adhesive tape captures the eggs and/or larvae by making them adhere to its adhesive surface, as pinworms migrate at night to the anal opening, where they lay their eggs.
  4. Remove the adhesive tape and apply it to the slide provided by the laboratory, pressing gently to ensure proper adhesion.
  5. Wrap the slide with the adhesive tape in a tissue and take the sample to the laboratory as soon as possible.

Semen Sample

When

By appointment only.

Where

At the medical laboratory.

How

  1. Before collecting the semen sample, a period of sexual abstinence, including sexual intercourse and/or masturbation, of at least 2 days and no more than 7 days is required. Please indicate the exact number of days of abstinence on the form to be completed and submitted.
  2. Purchase a sterile collection container from a pharmacy.
  3. The semen sample must be collected exclusively by masturbation, directly into the sterile container with a wide opening.
  4. To minimise the risk of contamination of the container, it is recommended that the lid be removed only at the time of semen collection and replaced immediately after ejaculation.
  5. To prevent any leakage from the container, make sure it is tightly closed and do not turn the container upside down during transport.
  6. Once the sample has been collected, write the patient’s surname and first name, the date and the time of collection on the container (not on the lid).
  7. The semen sample must be collected directly at the laboratory, strictly observing the scheduled appointment time, and immediately handed in at the sample collection room.
  8. The patient must complete an information form and present it when submitting the semen sample at the sample collection room. Qualified medical staff will assess the suitability of the sample and will be available to answer questions and provide explanations regarding the semen analysis.
  9. Only after the sample has been submitted will the administrative registration process be completed.

For further information regarding semen analysis, please contact the qualified medical staff at the medical laboratory directly.

Sputum Sample

Sputum should only be collected from patients with pneumonia and a productive cough who are able to expectorate.

Where

Sputum should be collected at home in the morning on an empty stomach.

Results will be available online (if requested at the time of sample collection) from 4:30 p.m. or at our reception desks from 4:30 p.m. to 7:00 p.m.

How

  1. Collect the sample preferably before starting antimicrobial therapy; otherwise, please indicate this.
  2. Collect the sample in the morning on an empty stomach.
  3. Remove any dentures, clean the oral cavity and gargle with sterile distilled water.
  4. Sputum should be produced by coughing directly into the sterile container and must not be contaminated with saliva.
  5. If the patient has difficulty producing sputum, expectoration may be facilitated by gargling with a warm saline solution.
  6. Sputum must be collected in the presence of a productive cough and must not consist solely of saliva.
  7. It is recommended not to collect multiple sputum samples in the same container.
  8. Deliver the sample to the laboratory by 10:30 a.m.

Urine Cytology Examination

BRING THREE URINE CONTAINERS AND THE MEDICAL REQUEST FORM.

 

• In the morning, discard the first urine. Drink 3–4 glasses of water and engage in some physical activity. After one hour, when you feel the urge to urinate, collect the first sample in the urine container.

Write the patient’s first name, surname and date of collection on the container.

• On the first day, go to Corilab, take a ticket for laboratory test registration and complete the administrative procedures, including registration and payment. From 8:30 a.m. to 10:30 a.m.

• The same procedure must be repeated by the patient and/or an authorised person on the following two consecutive days, without going to the cash desks as on the first day.

The urine collection days must be consecutive. Do not start the collection on a Friday. Avoid starting the collection if public holidays fall within the collection period.

No appointment is required to start the collection at the facility.

Contatti

Via Duca d’Aosta, 8 - 00044 Frascati (Roma)

Tel.: 06-942 21 50 – 06-942 25 20
Email: info@corilab.it
P.I. 01263161000
C.F. 03934400585

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