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Test Code SDHBZ SDHB Gene, Full Gene Analysis

Useful For

Aiding in the diagnosis of hereditary paraganglioma-pheochromocytoma syndrome associated with pathogenic SDHB gene variants

Method Name

Polymerase Chain Reaction (PCR) Followed by DNA Sequence Analysis and Gene Dosage Analysis by Multiplex Ligation-Dependent Probe Amplification (MLPA)
(PCR is utilized pursuant to a license agreement with Roche Molecular Systems, Inc.)

Reporting Name

SDHB Gene, Full Gene Analysis

Specimen Type


Specimen Required

Specimen Type: Whole blood


Preferred: Lavender top (EDTA) or yellow top (ACD)

Acceptable: Any anticoagulant

Specimen Volume: 3 mL

Collection Instructions:

1. Invert several times to mix blood.

2. Send specimen in original tube.

Additional Information: Specimen preferred to arrive within 96 hours of collection.


1. SDHB, SDHC, SDHD Gene Testing Patient Information (T659) in Special Instructions is required.

2. Informed Consent for Genetic Testing (Supply T576) in Special Instructions is required.

3. New York Clients-Informed consent is required. Please document on the request form or electronic order that a copy is on file. An Informed Consent for Genetic Testing (Supply T576) is available in Special Instructions.

Specimen Minimum Volume

Blood: 1 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Ambient (preferred)

Reference Values

An interpretive report will be provided.

Day(s) and Time(s) Performed

Performed weekly, varies

Performing Laboratory

Mayo Medical Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

81405-SDHB (succinate dehydrogenase complex, subunit B, iron sulfur) (eg, hereditary paraganglioma), full gene sequence

81403-SDHB duplication/deletion

LOINC Code Information

Result ID Test Result Name Result LOINC Value
37467 Result Summary 50397-9
37468 Result No LOINC Needed
37469 Interpretation 69047-9
37470 Additional Information 48767-8
37471 Specimen 31208-2
37472 Source 31208-2
37473 Released By No LOINC Needed