Test ID: LDBF
Lactate Dehydrogenase (LD), Body Fluid
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
8022
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
Yes
Method Name A short description of the method used to perform the test
Photometric
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Lactate Dehydrogenase (LD), BF
Aliases Lists additional common names for a test, as an aid in searching
LD (Lactate Dehydrogenase), Body Fluids
LD, CSF
LDH (Lactate Dehydrogenase), Body Fluids
LD, CSF
LDH (Lactate Dehydrogenase), Body Fluids
Specimen Type Describes the specimen type needed for testing
Body Fluid
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
Collection Container/Tube: Sterile container
Submission Container/Tube: Plastic container
Specimen Volume: 1 mL
Collection Instructions: Centrifuge to remove any cellular material.
Additional Information: Indicate specimen source.
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
0.5 mL
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Hemolysis | Mild reject; Gross reject |
| Lipemia | NA |
| Icterus | NA |
| Other | NA |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
| Specimen Type | Temperature | Time |
|---|---|---|
| Body Fluid | Ambient (preferred) | 7 days |
| Refrigerated | 48 hours |
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.
Not applicable
Cautions Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances
Lactate dehydrogenase activity is one of the most sensitive indicators of in vitro hemolysis. Causes can include transportation via pneumatic tube and vigorous mixing.
Method Description Describes how the test is performed and provides a method-specific reference
Lactate and NAD+, in the presence of lactate dehydrogenase, are converted to pyruvate and NADH. The rate at which NADH is formed is determined by increase in absorbance and is directly proportional to enzyme activity.(Package insert: Roche LDH reagent, Indianapolis, IN, November 1999)
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Sunday; Continuously
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
Same day/1 day
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
2 days
Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded
1 week
Performing Laboratory Location The location of the laboratory that performs the test
Rochester
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's instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR), Investigation Use Only (IUO) product, or a Research Use Only (RUO) product.
This test has been modified from the manufacturer’s instructions. Its performance characteristics were determined 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 Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
83615
LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.
| Result ID | Reporting Name | LOINC Code |
|---|---|---|
| LD_BF | Lactate Dehydrogenase (LD), BF | 2529-6 |
| FLD11 | Fluid Type | 14725-6 |
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