Routine urinalysis (UA) is one of the most frequently requested laboratory procedures at Main Line Health Laboratories (MLHL) because it can provide a useful indication of body health. It can be performed on a "first morning" or random urine specimen. Various diseases and disorders can be detected through a routine UA.
Below is a summary of urine specimen types, their diagnostic uses and physician instructions.
|Description:||This type of specimen is most convenient to obtain.|
Patient may void at any time of the day or
|Description:||This urine excretion is the most concentrated.|
|Uses:||Protein, nitrite, microscopic analysis and routine urinalysis.|
Instruct the patient to void before retiring at night and discard specimen. On arising the next morning the patient should void and collect the urine specimen. Have the patient deliver the specimen to your office for transport to MLHL or bring the specimen to an MLHL collection facility. If using an MLHL collection site, please instruct the patient to bring a completed test requisition and to indicate that the specimen is a "first morning" specimen.
|Description and Uses:||Used when metabolic abnormalities are suspected and for glucose-level determinations for diabetes mellitus testing.|
Clean-Catch Mid-stream Urine
|Description:||The specimen is free of contamination.|
|Uses:||Routine urinalysis. Culture for bacteria and/or microscopic analysis.|
Many physicians prefer that urine specimens
submitted for routine urinalysis be collected as
the "first morning" specimen and/or a "clean
catch" specimen. Specific instructions
concerning urine cultures are provided in the
Directory of Services under the culture section.
Explain to the patient that this type of specimen involves first voiding approximately one half of the urine into the toilet, then collecting a portion of "mid-stream" urine in a sterile urine container, and finally allowing the rest to pass into the toilet. Explain that this type of specimen is used to detect the presence or absence of infecting organisms and, therefore, must be free of contaminating matter that may be present on the external genital areas.
Obtain the correct collection kit from MLHL and instruct the patient as follows:
Timed Urine Specimens (e.g., 2-hour, 4-hour, 24-hour)
|Description:||The excretion rate of the analyte can be determined.|
|Uses:||Creatinine clearance test, urobilinogen determinations, hormone studies.|
For many urine chemistry procedures the specimen of choice is 24-hour urine. In some instances special preservatives or dietary restrictions are required. Prior to collection you should consult the specific test ordered in the Directory of Services. Proper specimen collection is critical to obtaining accurate results. MLHL can provide you with patient instruction sheets for collecting 24-hour urine specimens.
General instructions for collection of 24-hour urine specimens:
For example: Begin collecting the 24-hour urine specimen by voiding at 7:00 am and discarding the urine. Collect all urine voided during the next 24 hours. At 7:00 am the next morning, void and add the urine to the collection container. Label the container and deliver to the office or MLHL collection facility for processing and referral to MLHL.
Please refer any questions to the Main Line Health Laboratories Client Service Center during normal business hours at 484.580.4200.