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Primary Aldosteronism via CACNA1H Gene

Summary and Pricing

Test Method

Sequencing and CNV Detection via NextGen Sequencing using PG-Select Capture Probes
Test Code Test Copy GenesTest CPT Code Gene CPT Codes Copy CPT Codes Base Price
4955 CACNA1H 81479 81479,81479 $640 Order Options and Pricing
Test Code Test Copy Genes Test CPT Code Gene CPT Codes Copy CPT Code Base Price
4955CACNA1H81479 81479,81479 $640 Order Options and Pricing

Pricing Comments

This test is also offered via our exome backbone with CNV detection (click here). The exome-based test may be higher priced, but permits reflex to the entire exome or to any other set of clinically relevant genes.

An additional 25% charge will be applied to STAT orders. STAT orders are prioritized throughout the testing process.

Turnaround Time

3 weeks on average for standard orders or 2 weeks on average for STAT orders.

Please note: Once the testing process begins, an Estimated Report Date (ERD) range will be displayed in the portal. This is the most accurate prediction of when your report will be complete and may differ from the average TAT published on our website. About 85% of our tests will be reported within or before the ERD range. We will notify you of significant delays or holds which will impact the ERD. Learn more about turnaround times here.

Targeted Testing

For ordering sequencing of targeted known variants, go to our Targeted Variants page.


Genetic Counselors


  • Angela Gruber, PhD

Clinical Features and Genetics

Clinical Features

Primary aldosteronism is characterized by a constitutive overproduction of aldosterone (Dutta et al. 2016; Mulatero et al. 2013). It is the most common form of secondary hypertension and affects 8–13% of patients with hypertension. The two most common causes of primary aldosteronism are aldosterone-producing adenoma (APA) and bilateral adrenal hyperplasia (BAH).

In addition to familial hyperaldosteronism types I, II and III, germline pathogenic variants in genes encoding voltage-gated calcium channels (CACNA1D and CACNA1H) can cause primary aldosteronism with or without neuromuscular abnormalities. In particular, compared with CACNA1D-causative primary aldosteronism, patients with CACNA1H defects present hypertension by age 10 years followed by no seizures or neurologic abnormalities (Scholl et al. 2015).


Germline pathogenic variants causing primary aldosteronism with autosomal dominant inheritance have been found in the CYP11B2, KCNJ5, CACNA1D and CACNA1H genes (Dutta et al. 2016; Mulatero et al. 2013).

To date, only a very limited number of germline missense changes have been found in CACNA1H in patients with primary aldosteronism (Scholl et al. 2015). CACNA1H encodes the α1 subunit of the T-type voltage calcium channel.

Clinical Sensitivity - Sequencing with CNV PG-Select

Scholl et al. performed exome sequencing in 40 unrelated individuals with hypertension due to primary aldosteronism with onset age by 10 years (Scholl et al. 2015). In these patients who were negative for pathogenic variants in the CYP11B2, KCNJ5, and CACNA1D genes, five probands were found to have a heterozygous missense pathogenic variant in the CACNA1H gene.

Testing Strategy

This test provides full coverage of all coding exons of the CACNA1H gene, plus ~10 bases of flanking noncoding DNA. We define full coverage as >20X NGS reads or Sanger sequencing.

Indications for Test

Candidates for this test are patients with hereditary primary aldosteronism.


Official Gene Symbol OMIM ID
CACNA1H 607904
Inheritance Abbreviation
Autosomal Dominant AD
Autosomal Recessive AR
X-Linked XL
Mitochondrial MT


Name Inheritance OMIM ID
Hyperaldosteronism, Familial, Type IV AD 617027


  • Dutta et al. 2016. PubMed ID: 27485459
  • Mulatero et al. 2013. PubMed ID: 23229280
  • Scholl et al. 2015. PubMed ID: 25907736


Ordering Options

We offer several options when ordering sequencing tests. For more information on these options, see our Ordering Instructions page. To view available options, click on the Order Options button within the test description.

myPrevent - Online Ordering

  • The test can be added to your online orders in the Summary and Pricing section.
  • Once the test has been added log in to myPrevent to fill out an online requisition form.
  • PGnome sequencing panels can be ordered via the myPrevent portal only at this time.

Requisition Form

  • A completed requisition form must accompany all specimens.
  • Billing information along with specimen and shipping instructions are within the requisition form.
  • All testing must be ordered by a qualified healthcare provider.

For Requisition Forms, visit our Forms page

Specimen Types

Specimen Requirements and Shipping Details

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View Ordering Instructions

1) Select Test Method (Backbone)

1) Select Test Type

2) Select Additional Test Options

STAT and Prenatal Test Options are not available with Patient Plus.

No Additional Test Options are available for this test.

Note: acceptable specimen types are whole blood and DNA from whole blood only.
Total Price: $
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