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Urine Collection Guidelines

Urine Test Collection

Detailed instructions for collecting morning urine samples, fasting requirements, and storage conditions.

Step-by-Step Instructions

  1. 1

    Avoid drinking water for at least 6 hours before urine collection. If you feel thirsty, you may sip a small amount of water.

  2. 2

    Avoid consuming heavy meals such as shabu, grilled/barbecue dishes, or foods high in carbohydrates and fat the day before urine collection.

  3. 3

    It is recommended to collect the first morning urine after waking up.

  4. 4

    Compare the urine color with the color chart. If the urine is very clear (Level 1), collect a new sample without drinking any water beforehand.

    Urine Color Chart
  5. 5

    For women, please wait at least 3 days after menstruation has ended before collecting the sample.

  6. 6

    Discontinue antibiotics and antifungal medications for 1 month prior to testing.

  7. 7

    Not recommended for individuals with kidney problems.

  8. 8

    Continue your regular prescribed medications; do not discontinue them.

  9. 9

    Dietary supplements, probiotics, and vitamins do not need to be discontinued, unless otherwise advised by your doctor or specialist.

Sample Storage Conditions Before Sending

Storage ConditionRed-cap container with preservative (Celfix container)
Room temperature5 days
Refrigerated14 days
Frozen1 month

If using a sterile container without preservative, keep the sample frozen and deliver it to Celfix within 2 days after collection.

For more information call 02-868-7711 or Line : @celfix