Following are links to genetic genealogy testing companies and the tests each one offers (see our DNA test overview to learn what each type of test can tell you). Be sure to visit each company's Web site for updates on its services, as well as pricing and other information.

• 23andme
  www.23andme.com
  help@23andme.com
  Tests: autosomal; results include tools for interpreting test results relating to health information and deep ancestry 
• African Ancestry
  www.africanancestry.com
  (202) 723-0900
  Tests: ethnic (African)
  
• AfricanDNA
  www.africandna.com
  (713) 868-1438
  Tests: ethnic (African; can also order genealogical research services) 
• Ancestry DNA
  dna.ancestry.com
  Tests: mtDNA, Y-DNA  
  
• DNA Consulting
  dnaconsultants.com
  (505) 473-5155
  Tests: biogeographical, Y-DNA, mtDNA, ethnic (Native American and African-American)
  
• DNA Heritage
  dnaheritage.com
  (866) 736-2362
  Tests: Y-DNA, mtDNA
  
• Family Tree DNA
  familytreedna.com
  (713) 868-1438
  Tests: Y-DNA, mtDNA, biogeographical, ethnic (Native American, African-American, Jewish), STR 
• FamilyBuilder
  familybuilder.com
  Tests: Y-DNA, mtDNA
• GeneTree
  genetree.com
  (866) 740-6362 (toll-free)
  Tests: mtDNA; Y-DNA 
• National Geographic Genographic project
  www3.nationalgeographic.com/genographic
  Tests: mtDNA, Y-DNA (12 markers only)
  
• Oxford Ancestors
  oxfordancestors.com
  +44 (186) 584 7549
  Tests: mtDNA, Y-DNA, ethnic (British Isles and others)