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Test Id : CRITH
DNA Double-Stranded (dsDNA) Antibodies by Crithidia luciliae IFA, IgG, Serum
Useful For
Suggests clinical disorders or settings where the test may be helpful
Suggests clinical disorders or settings where the test may be helpful
This test may not be used independently for monitoring treatment response or establishing remission.
Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
See Connective Tissue Disease Cascade (CTDC) in Special Instructions
Special Instructions
Library of PDFs including pertinent information and forms related to the test
Library of PDFs including pertinent information and forms related to the test
Method Name
A short description of the method used to perform the test
A short description of the method used to perform the test
Only orderable as reflex. For more information see ADNAR / DNA Double-Stranded (dsDNA) Antibodies with Reflex, IgG, Serum.
Indirect Immunofluorescence
NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.
Indicates the status of NY State approval and if the test is orderable for NY State clients.
Yes
Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test
Lists a shorter or abbreviated version of the Published Name for a test
dsDNA Ab by Crithidia IFA, IgG, S
Aliases
Lists additional common names for a test, as an aid in searching
Lists additional common names for a test, as an aid in searching
Anti-DNA
Anti-ds (Anti-Double Stranded) DNA
ANTI-dsDNA ANTIBODY, IgG
Antibody to ds-DNA
Antibody to Native DNA (n-DNA)
Connective Tissue Disease Activity Assessment (2 tests)
Connective Tissue Disease Autoantibody Panel (2 tests)
DNA Double Stranded (ds-DNA) Antibody
DNA, Anti
Double Stranded DNA
ds-DNA Antibody
IgG Anti-DS DNA Antibody
IgG Autoantibodies to Double Stranded (ds)DNA
LUPUS
Native Anti-DNA
Native DNA
SLE (Systemic Lupus Erythematosus)
Systemic Lupus Erythematosus (SLE)
Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
See Connective Tissue Disease Cascade (CTDC) in Special Instructions
Specimen Type
Describes the specimen type validated for testing
Describes the specimen type validated for testing
Serum
Specimen Required
Defines the optimal specimen required to perform the test and the preferred volume to complete testing
Defines the optimal specimen required to perform the test and the preferred volume to complete testing
Only orderable as reflex. For more information see ADNAR / DNA Double-Stranded (dsDNA) Antibodies with Reflex, IgG, Serum.
Special Instructions
Library of PDFs including pertinent information and forms related to the test
Library of PDFs including pertinent information and forms related to the test
Specimen Minimum Volume
Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory
Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory
0.2 mL
Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included
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 |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 21 days | |
| Frozen | 21 days |
Useful For
Suggests clinical disorders or settings where the test may be helpful
Suggests clinical disorders or settings where the test may be helpful
This test may not be used independently for monitoring treatment response or establishing remission.
Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
See Connective Tissue Disease Cascade (CTDC) in Special Instructions
Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
Double-stranded DNA (dsDNA) antibodies are systemic lupus erythematosus (SLE)-specific antibodies and are part of the immunology domain of the 2019 European League Against Rheumatism (EULAR)/American College of Rheumatology (ACR) classification criteria for SLE (1) as well as a previous guidance on SLE diagnosis.(2) The Crithidia luciliae indirect immunofluorescence test (CLIFT) is widely used as a confirmatory test following a positive dsDNA IgG result obtained by a solid-phase immunoassay due to its structural or analytical specificity.(3-5)
A minority of SLE patients may test negative using HEp-2 by IFA for nuclear antibodies.(9) Testing antibodies associated with the HEp-2 IFA cytoplasmic pattern such as ribosomal P IgG autoantibodies may be useful if features of neuropsychiatric disease are present.(9) Alternatively, patients may be tested for Smith, ribonuclear protein (RNP), sulfosalicylic acid (SSA)-52 and SSA-60 antibodies.(6,9)
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.
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.
Only orderable as reflex. For more information see ADNAR / DNA Double-Stranded (dsDNA) Antibodies with Reflex, IgG, Serum.
Negative
Interpretation
Provides information to assist in interpretation of the test results
Provides information to assist in interpretation of the test results
A positive result for double-stranded DNA (dsDNA) IgG antibodies in the appropriate clinical context is highly suggestive of systemic lupus erythematosus (SLE). The presence of dsDNA IgG antibodies detected using the Crithidia luciliae indirect immunofluorescence test is highly specific for SLE with moderate sensitivity. A negative result does not rule out a diagnosis of SLE.
Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances
IgG antibodies to double-stranded DNA (dsDNA) by Crithidia luciliae indirect immunofluorescence test (CLIFT) is reported qualitatively (positive or negative). For semiquantitative assessment of IgG antibodies to dsDNA, see results from ADNA / Double-stranded Antibodies, IgG, Serum.
A weak positive result dsDNA IgG by enzyme-linked immunosorbent assay with a CLIFT negative result may be suggestive of early disease, inactive disease, or a false positive result.
A positive result for IgG antibodies to dsDNA by Crithidia luciliae may occur in patients with diseases other than systemic lupus erythematosus (SLE).
A negative result does not exclude a diagnosis of SLE.
Clinical Reference
Recommendations for in-depth reading of a clinical nature
Recommendations for in-depth reading of a clinical nature
1. Aringer M, Costenbader K, Daikh D, et al: European league against rheumatism/American College of Rheumatology Classification Criteria for systemic lupus erythematosus. Arthritis Rheumatol. 2019 Sep;71(9):1400-1412. doi: 10.1002/art.40930
2. Petri M, Orbai AM, Alarcón GS, et al: Derivation and validation of the Systemic Lupus International Collaborating Clinics classification criteria for systemic lupus erythematosus. Arthritis Rheum. 2012 Aug;64(8): 2677-2686. doi: 10.1002/art.34473
3. Enocsson H, Sjowall C, Wirestam L, et al: Four anti-dsDNA antibody assays in relation to systemic lupus erythematosus disease specificity and activity. J Rheumatol. 2015 May;42(5):817-825. doi: 10.3899/jrheum.140677
4. Sarbu MI, Salman-Monte TC, Munoz PR, Lisbona MP, Bernabe MA, Carbonell J: Differences between clinical and laboratory findings in patients with recent diagnosis of SLE according to the positivity of anti-dsDNA by the Crithidia luciliae method. Lupus. 2015 Oct;24(11):1198-1203. doi: 10.1177/0961203315573852
5. Rekvig OP: Autoimmunity and SLE: factual and semantic evidence-based critical analyses of definitions, etiology, and pathogenesis. Front Immunol. 2020 Oct 6;11:569234. doi: 10.3389/fimmu.2020.569234
6. Damoiseaux J, Andrade LEC, Carballo OG, et al: Clinical relevance of HEp-2 indirect immunofluorescent patterns: the International Consensus on ANA patterns (ICAP) perspective. Ann Rheum Dis. 2019 Jul;78(7):879-889. doi: 10.1136/annrheumdis-2018-214436
7. Bragazzi NL, Watad A, Damiani G, Adawi M, Amital H, Shoenfeld Y: Role of anti-DNA auto-antibodies as biomarkers of response to treatment in systemic lupus erythematosus patients: hypes and hopes. Insights and implications from a comprehensive review of the literature. Expert Rev Mol Diagn. 2019 Nov;19(11):969-978. doi: 10.1080/14737159.2019.1665511
8. Fox BJ, Hockley J, Rigsby P, Dolman C, Meroni PL, Ronnelid J: A WHO Reference Reagent for lupus (anti-dsDNA) antibodies: international collaborative study to evaluate a candidate preparation. Ann Rheum Dis. 2019 Dec;78(12):1677-1680. doi: 10.1136/annrheumdis-2019-215845
9. Choi MY, Clarke AE, St Pierre Y, et al: Antinuclear antibody-negative systemic lupus erythematosus in an international inception cohort. Arthritis Care Res (Hoboken). 2019 Jul;71(7):893-902. doi: 10.1002/acr.23712
Special Instructions
Library of PDFs including pertinent information and forms related to the test
Library of PDFs including pertinent information and forms related to the test
Method Description
Describes how the test is performed and provides a method-specific reference
Describes how the test is performed and provides a method-specific reference
PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information
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.
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 Friday
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.
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.
2 to 3 days
Specimen Retention Time
Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded
Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded
14 days
Performing Laboratory Location
Indicates the location of the laboratory that performs the test
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.
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.
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.
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.
CPT codes are provided by the performing laboratory.
86255
LOINC® Information
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.
| Test Id | Test Order Name | Order LOINC Value |
|---|---|---|
| CRITH | dsDNA Ab by Crithidia IFA, IgG, S | 58466-4 |
| Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
|---|---|---|
| 62925 | dsDNA Ab by Crithidia IFA, IgG, S | 58466-4 |
| 37268 | Crithidia Interpretation | 69048-7 |
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.
Test setup information contains test file definition details to support order and result interfacing between Mayo Clinic Laboratories and your Laboratory Information System.
Sample Reports
Normal and Abnormal sample reports are provided as references for report appearance.
Normal and Abnormal sample reports are provided as references for report appearance.
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.
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.