A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Porphobilinogen, Quantitative, Random Urine
Test CodeAlias/See Also
LAB3304
CPT Codes
<p>84110</p>
Preferred Specimen
Specimen Type: Urine
Collection Container/Type
Preferred: Sterile container, unpreserved
Acceptable: Random clean-catch urine collected with 0.5g sodium carbonate (Na2CO3) per 100 mL of sample.
Submission Container/Tube: Sterile container
Specimen Volume: 2 mL
Collection Instructions: Urine should be refrigerated and protected from light.
Additional Information: Whenever possible, the specimen should be collected during an acute episode because porphobilinogen (PBG) may decrease rapidly upon remission. PBG may also degrade when samples are exposed to UV light for extended periods, or are transported at ambient temperature. If an amber collection jug/urine cup is not available, the sample must be protected from light by completely wrapping the container in aluminum foil. PBG is most stable at pH 6-7, but all samples may be sent with or without preservative. All results should be interpreted in the context of clinical findings, relevant history, and other laboratory data.
Minimum Volume
1 mL
Other Acceptable Specimens
Instructions
Whenever possible, the specimen should be collected during an acute episode because porphobilinogen (PBG) may decrease rapidly upon remission. PBG may also degrade when samples are exposed to UV light for extended periods, or are transported at ambient temperature. If an amber collection jug/urine cup is not available, the sample must be protected from light by completely wrapping the container in aluminum foil. PBG is most stable at pH 6-7, but all samples may be sent with or without preservative. All results should be interpreted in the context of clinical findings, relevant history, and other laboratory data.
Transport Temperature
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Not protected from light
Methodology
Chromatography/Mass Spectrometry
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Report Available
4-7 days
Reference Range
≤17 Years | <0.36 mg/g creat |
≥18 Years | <0.22 mg/g creat |
Clinical Significance
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042
Last Updated: February 17, 2023