8-Dye STR Kits for Forensic Analysis

Get More Information from Compromised DNA Samples

Clarify your forensic analyses with advanced eight-dye STR multiplex technology. By including additional dye channels relative to previous 4-, 5- or 6-dye kits, 8-dye PowerPlex® STR multiplex kits can give you improved and more informative analyses for even your most challenging DNA samples.

Compare 8-Dye Kits
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The Power of Eight Colors

Until recently, forensic analyses using STR analysis relied on 4-, 5- or 6-dye systems. That changed when we introduced the first 8-dye STR chemistry and 8-dye compatible Spectrum and Spectrum Compact CE instruments, an advance that means more loci can be included in a single kit. The results are STR multiplex kits with superior sensitivity, consistency, and discriminatory power.

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See the developmental validation study for the 8-dye PowerPlex® 35GY System, published in Forensic Genomics.

Read Article

Avoid Dropout with “Mini-STRs”

UV radiation, heat and weather can severely degrade DNA collected from crime scenes, mass disasters and missing persons cases. When amplifying these samples, larger loci can drop-out, making it difficult or impossible to obtain complete STR profiles.

Many of the loci in our 8-dye STR multiplexes are less than 250bp long. These “mini-STRs” are less prone to dropping out, resulting in better and more complete profiles from even the most degraded DNA samples.

Efficiently Troubleshoot Amplifications

All our 8-dye STR systems include two Quality Indicators, QIS and QIL. These amplification products let you determine at-a-glance if an amplification was successful or why an unsuccessful amplification failed. You can use this information to troubleshoot unsuccessful amplification reactions and maximize your chances of obtaining a complete profile. 

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Quality indicators for the PowerPlex® 35GY System. Balanced QIS and QIL peaks indicate a successful STR profile (Panel A). An STR profile with balanced QIS and QIL peaks but no STR peaks indicates that no template DNA was amplified (Panel B). A sloping STR profile with balanced QIS and QIL peaks signals degraded sample (Panel C). A sloping STR profile with a low or missing QIL peak suggests the sample is inhibited (Panel D).

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Comprehensive Support for All 8-Dye STR Workflows

As the exclusive providers of eight-dye STR kits and 8-dye compatible CE instruments, we can support every step of your 8-dye STR analysis workflows.

Plus, when you partner with our Validation Services team, you get a group of former practitioners dedicated to easing your lab’s transition to 8-dye and other technologies and establishing validated workflows.

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The Choice is Yours

Find the kit that best meets your need and compare to related 5- or 6-dye kits. Our growing family of eight-dye STR multiplex kits is tailored to meet regional requirements and databases. 

  PowerPlex® 35GY System PowerPlex® 18E System PowerPlex® 6C System PowerPlex® ESX17/ESI17 Systems
Number of Dyes
8
8
6
5
Total Markers
35*
18**
27*
17**
Quality Indicators
2
2
None
None
Number of Autosomal Loci
23
16
23
16
Number of Gender Identification Loci
2
2
2
1
Number of Y-STRs
10
1 (DYS391)
2
None
Number of Loci <350bp
23
18
17
13/12
SE33 Range
170–324
170–324
274–417
274–417/313–465
CE Instrument Compatibility AB131XX
no
no
yes
yes
AB135XX
no
no
yes
yes
Spectrum CE
yes
yes
yes
yes
Spectrum Compact CE
yes
yes
yes
yes
Optimal Amount of Template DNA in 25µl Reaction
1ng/29 cycles
0.5ng/30 cycles
1ng/29 cycles
0.5ng/30 cycles
Maximum Volume of Sample in 25µl Reaction
15µl
17.5µl
15µl
17.5µl
Approximate Amp Time Direct Amp
55 min
70 min
55 min
45 min
Casework
65 min
75 min
60 min
50 min
  Download Brochure Download Brochure    
  View Product View Product    

*Includes all CODIS-core loci
**Includes all ENFSI-recommended loci

Precision in Forensic DNA Analysis

Forensic analysis demands accuracy, especially when dealing with challenging samples. At the Institute of Legal Medicine in Cologne, experts emphasize the importance of selecting the right kit for the job. Whether analyzing kinship samples or identifying deceased individuals, the choice of technology can make all the difference. With the use of Spectrum CE and PowerPlex® 18E Systems, these advanced solutions excel in processing degraded samples, ensuring that every analysis is done right the first time.

See the Power of 8-Dye Kits in Action

The PowerPlex® 18E and 35GY Systems were used in this validation study for the Bone DNA Extraction Kit.

PowerPlex® 35GY System vs. PowerPlex® 6C System
PowerPlex® 18E System vs. PowerPlex® ESX17/ESI17 Systems
  Loci Name PowerPlex® 35GY PowerPlex® 6C
Gender Identification Amelogenin
tcheck
tcheck
DYS391
tcheck
tcheck
CODIS-core loci D1S1656
tcheck
tcheck
D2S441
tcheck
tcheck
D2S1338
tcheck
tcheck
D3S1358
tcheck
tcheck
D8S1179
tcheck
tcheck
D10S1248
tcheck
tcheck
D12S391
tcheck
tcheck
D16S539
tcheck
tcheck
D18S51
tcheck
tcheck
D19S433
tcheck
tcheck
D21S11
tcheck
tcheck
D22S1045
tcheck
tcheck
FGA
tcheck
tcheck
TH01
tcheck
tcheck
vWA
tcheck
tcheck
D5S818
tcheck
tcheck
D7S820
tcheck
tcheck
D13S317
tcheck
tcheck
CSF1PO
tcheck
tcheck
TPOX
tcheck
tcheck
  Loci Name PowerPlex® 35GY PowerPlex® 6C
non-CODIS loci Penta D
tcheck
tcheck
Penta E
tcheck
tcheck
SE33
tcheck
tcheck
Quality indicators QIS
tcheck
 
QIL
tcheck
 
Y-STR loci DYS385a/b
tcheck
 
DYS390
tcheck
 
DYS438
tcheck
 
DYS448
tcheck
 
DYS456
tcheck
 
DYS458
tcheck
 
DYS481
tcheck
 
DYS635
tcheck
 
DYS643
tcheck
 
DYS570  
tcheck
DYS576  
tcheck

  Loci Name PowerPlex® 18E System PowerPlex® ESX 17/ESI 17 Systems
Gender Identification Amelogenin
tcheck
tcheck
DYS391
tcheck
 
ENFSI loci D1S1656
tcheck
tcheck
D2S441
tcheck
tcheck
D2S1338
tcheck
tcheck
D3S1358
tcheck
tcheck
D8S1179
tcheck
tcheck
D10S1248
tcheck
tcheck
D12S391
tcheck
tcheck
D16S539
tcheck
tcheck
D18S51
tcheck
tcheck
D19S433
tcheck
tcheck
D21S11
tcheck
tcheck
D22S1045
tcheck
tcheck
FGA
tcheck
tcheck
TH01
tcheck
tcheck
vWA
tcheck
tcheck
SE33
tcheck
tcheck
Quality indicators QIS
tcheck
 
QIL
tcheck
 

Not finding the details you need about 8-dye STR kits?

Contact your local Promega forensic regional account manager to learn more. Alternatively, request more information by filling out the form linked below. 

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ForensicGrade

Promega forensic products are manufactured in alignment with the ISO 18385 standard. This standard ensures minimal risk of human DNA contamination for products used to collect, store and analyze biological materials for forensic purposes. Learn more.