Test Catalog

Test Id : HGBQ

Hemoglobin, Qualitative, Random, Urine

Useful For
Suggests clinical disorders or settings where the test may be helpful

Screening for hematuria, myoglobinuria, or intravascular hemolysis

Method Name
A short description of the method used to perform the test

Dipstick

NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.

No

Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test

Hemoglobin, QL, U

Aliases
Lists additional common names for a test, as an aid in searching

Urine Hemoglobin

Specimen Type
Describes the specimen type validated for testing

Urine

Specimen Required
Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Container/Tube: Plastic urine container

Specimen Volume: 20 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Specimen Minimum Volume
Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

4 mL

Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected

No specimen should be rejected.

Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 72 hours

Useful For
Suggests clinical disorders or settings where the test may be helpful

Screening for hematuria, myoglobinuria, or intravascular hemolysis

Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test

Free hemoglobin (Hb) in urine usually is the result of lysis of red blood cells present in the urine due to bleeding into the urinary tract (kidney, ureters, bladder). Less commonly, intravascular hemolysis (eg, transfusion reaction, hemolytic anemia, paroxysmal hemoglobinuria) may result in excretion of free Hb from blood into urine.

 

Injury to skeletal or cardiac muscle results in the release of myoglobin, which also is detected by this assay. Conditions associated with myoglobinuria include hereditary myoglobinuria, phosphorylase deficiency, sporadic myoglobinuria, exertional myoglobinuria in untrained individuals, crush syndrome, myocardial infarction, myoglobinuria of progressive muscle disease, and heat injury.

Reference Values
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

COLOR: Colorless, Yellow

CLARITY: Clear

CONCISTENCY: Not reported

HEMOGLOBIN: Negative

Red Blood Cells: <3 RBC/hpf

Interpretation
Provides information to assist in interpretation of the test results

Free hemoglobin (Hb), in the presence of red blood cells (RBC), indicates bleeding into the urinary tract.

 

Free Hb, in the absence of RBC, is consistent with intravascular hemolysis.

Note: RBC may be missed if lysis occurred prior to analysis; the absence of RBC should be confirmed by examining a fresh specimen.

 

The test is equally sensitive to hemoglobin and to myoglobin. The presence of myoglobin may be confirmed by MYGLU / Myoglobin, Random, Urine.

Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances

Capoten (captopril) may reduce the test sensitivity.

 

Certain oxidizing contaminants, such as hypochlorite, may produce false-positive results.

 

Microbial peroxidase associated with urinary tract infection may cause a false-positive reaction.

Clinical Reference
Recommendations for in-depth reading of a clinical nature

1. Fairbanks, V.F. and Klee G.G., Textbook of Clinical Chemistry 1986, Chapter 15, p 1562

2. Brunzel N: Chemical examination of urine. In: Fundamentals of Urine and Body Fluids. 4th ed. 2018:85-125

Method Description
Describes how the test is performed and provides a method-specific reference

The Clinitek Status+ analyzer is a reflectance spectrophotometer that analyzes the intensity and color of the light reflected from the reagent areas. No calculations are required.(Package insert: Multistix 10 SG Reagent Strip .AN30516J Siemens. Rev. 02/2011)

 

A microscopic examination is performed on urine sediments by conventional microscopy. All remaining urines have a manual microscopic examination performed on the sediment after centrifuging for 5 minutes at 1400 RPM.

PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information

No

Day(s) Performed
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.

Monday through Sunday

Report Available
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

Same day/1 day

Specimen Retention Time
Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

2 days

Performing Laboratory Location
Indicates the location of the laboratory that performs the test

Rochester

Fees
Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.

  • Authorized users can sign in to Test Prices for detailed fee information.
  • Clients without access to Test Prices can contact Customer Service 24 hours a day, seven days a week.
  • Prospective clients should contact their Regional Manager. For assistance, contact Customer Service.

Test Classification
Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR) product.

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information
Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Clinic Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.

CPT codes are provided by the performing laboratory.

81003

Test Setup Resources

Setup Files
Test setup information contains test file definition details to support order and result interfacing between Mayo Clinic Laboratories and your Laboratory Information System.

Excel | Pdf

Sample Reports
Normal and Abnormal sample reports are provided as references for report appearance.

Normal Reports | Abnormal Reports

SI Sample Reports
International System (SI) of Unit reports are provided for a limited number of tests. These reports are intended for international account use and are only available through MayoLINK accounts that have been defined to receive them.

SI Normal Reports | SI Abnormal Reports