How to Properly Swab DNA Evidence at a Crime Scene

[@appleisforyou6577]

Thank you. I have a forensic course, and we have an assignment regarding on collecting evidence. You helped me a lot.

[@reformtofreedomministries7282]

The tutorial was simple and full of information.

[@braylens1822]

If someone gave you a report that said blood was not detected on an item. However a sample was taken from said item and labeled at said item-1 The swab sample had the person in questions DNA. So what was the DNA that was found if no blood was detected on the item itself? The case is a male suicide victim gunshot to the head.

[@mrvashist9568]

1. Can we collect allele/gene from used utensil or clothes? 2. Can allele/gene be collected from a blade which has been washed once as in there was no blood visible by naked eyes?

[@AJayAnswersYou]

This is one reason to love America.

[@threedy5513]

what if you are not collecting a blood, is it okay to just use one gloves?

[@ArmenBalian-w5g]

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[@owenm7024]

Beautiful handwriting, damn

[@umaniperera9408]

why is the evidence placed in bindle before placing in a envelope?

[@nationalforensicacademy5682]

katy crazy some people choose to place the swabs into the small swab box to further protect the evidence with an additional layer between the blood swabs and the envelope that it is place into for final packaging. All biological evidence needs to be allowed to “breathe” so that the DNA does not get mold and ruin the DNA sample. Some choose to simply place the swabs back into the sterile swab wrapper and then into an envelope. If you do this make sure you remove enough of the swab wrapper so as to not prevent the blood evidence from properly drying on the swab. Never use plastic to preserve a biological sample. Hope this answers your question. Thank you.

[@charmsoc]

@@nationalforensicacademy5682 No --- this is just wrong. UK ISO SOPs show that you should not do this!

[@Anonymous699-b8t]

Interesting!!!

[@xochitlesprit7656]

When putting the gloves on he did not follow an aseptic approach and actually possibly contaminated the first glove he put on with his DNA when he went to put the second glove on.....

[@ashleyleigh3361]

If someone donates their hair to locks of love and the recipient of the hair commits a crime and leaves hair at the crime scene will that persons dna at the crime scean incriminate said person that donated the hair?

[@nationalforensicacademy5682]

ashley leigh essentially everyone in your maternal line, male and female would be suspect. The hair would contain mitochondrial DNA which is from your mother only. So if you have siblings they would have the same mitochondrial DNA. On a side note, the good you do by donating hair would far outweigh the risk of a recipient of that hair committing a crime.

[@gresyjambhurkar909]

Thanks you Love from India 🇮🇳❤️

[@georgehemmington5501]

Please can you help me with my exam question: Q1if a hammer is left in a bush for over a year would fingerprints still be there Q2:Does the weather rub away fingerprints I know this is random but can you please help me as I’m struggling

[@ilikeyourspine]

George Hemmington it has been a year do you still need them?

[@lfcoey]

@@ilikeyourspine George is doing life now for murder because the weapon he used was found in some bushes and still had his finger prints on. Unfortunately he may not see your question for a while 👮‍♀️👮‍♂️

[@ilikeyourspine]

@@lfcoey seven months and Im living with my gf now crazy what can happen in 7 months

[@geoffreydick2011]

George, one year may be too much for the latent fingerprint to be lifted from the hammer reason being first and foremost metal be it with rain and or water doesn't match and that's why we normally see rust on those metals which are exposed to water. So some weather conditions are so hazardous to those examination

[@varadharajanmuralidharan5135]

Very useful sir. Thank you.

[@MrDesynchronization]

The homie Walquist!!!

[@medricadu8706]

If only they had this at the oj simpson crime scene 28 years ago

[@charmsoc]

This is incorrect, especially for UK proceedure, you should never swab from the centre of a stain, and also use wet and dry swabbing with sterile water!! Please, UK students, do NOT follow this!

[@capybaraman1359]

I'm at ur moms house

[@ArmenBalian-w5g]

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