Our Forensic DNA Testing department helps in Forensic Testing and careful Sample Handling

Missing Woman's Identity Confirmed Woman Found in the Desert, Identified by DNAExam
On August 5, officers from the Brooks County Sheriff's Department found a woman's body 20 miles from Highway 281, not far from Falfurrias.

Mitochondrial DNA Analysis – A Different Approach to Crime Solving
Bio-Synthesis, Inc. begins Mitochondrial DNA Testing or MtDNA, making it one of only a handful of labs to perfect the technology. MtDNA Testing allows Forensic scientist to get a profile from samples that are old or possibly damaged, where the usual technique may not be effective....

DNASwab by DNAExam Combines Convenience with Confidentiality at Home
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Preferred Samples for DNA Testing

BUCCAL SWAB SAMPLES ARE THE IDEAL FOR DNA TESTING

	Buccal swab
	Blood (liquid or on gauze or on swab)
	Eye brows (3-5)
	Hairs (3-5) with roots or follicles
	Cigarette butts (3-5)

The following table shows the possible sources for DNA testing.

Sample type	Total samples tested	Positive results	Success rate (%)
Muscle tissue	2	2	100
Buccal swab	3019	2926	97
Liquid blood	38	36	95
Blood swab	173	162	94
Slides (without cover glasses and dyes)	10	9	90

Forensic samples
Eye brows (3-5)	15	14	93
Rolled cigarettes (joints)	72	65	90
Blood on various surfaces	4993	4326	87
Saliva on paper	31	26	84
Hairs (3-5) with roots	15	12	80
Umbilical cord (fresh, lest than 1 year old)	10	8	80
Umbilical cord (old, greater than 1 year)	6	3	50
Cigarette butts	1494	1073	72
Buccal swab	182	125	69
Chewing gum	22	12	55
Toothbrush	4	2	50
Cigars	2	1	50
Ear wax	8	4	50
Saliva on bottles, soda cans (lips touch on bottle or can)	49	18	37
Saliva on a ski mask	3	1	33
Biological remains	2304	742	32
Nails	10	2	20

Miscellaneous samples
Underwear	50	25	50
Diapers	4	2	50
Tampon	30	15	50
Sweaty clothing (unwashed)	10	1	10
Shoe laces	10	1	10
Eye glasses (sun glasses or prescription glasses)	20	1	5
Any other sources could be tested	-	-	-

Notes:

There are a number of factors that play a role in the ability to obtain a genetic profile, such as:
	Quantity, the smaller the sample, the less DNA that may be obtained.
	Environmental damage, chemical exposure, humidity, all play a role in DNA damage, which all in various ways affect the amount of recoverable and useful DNA.
	Contaminants, there are a number of chemicals that can affect the success rate of the reactions involved in the process of obtaining a profile, such us excess dyes, oils, colorants, etc that may be present on some samples.
	Hair samples work better, if they are freshly plucked, as opposed to fallen off hairs. Also adult hair samples work better, as opposed to infant hair samples. As the roots are pretty small and would require greater number of hairs.
	In summary, whereas we desire samples that we know have a high success rate (of obtaining a profile), we will work with whatever samples are available and will do our best, understanding the variability in obtaining a profile is dependent on the nature and quality of each individual sample.

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	"I just want to thank the continued professional and courteous service your Customer Service team provided me during the stressful waiting period for the DNA results. I contacted both your phone support and instant chat support teams at least twice and received concerned support each time. Never did I feel like they thought I might be calling too much and needed to be more patient. I truly appreciate their consideration and patience during this time."
	Toni, January 2011
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Some of the data were gathered from Promega Corporation research team (www.promega.com).