Can you detect EDTA in blood?
Nadina Wiórkiewicz/Wikipedia (CC BY-SA 3.0) Lab tests showed a very small amount of EDTA in some Simpson-case blood evidence. But some experts believe the chemical came from a test sample, not blood from the crime scene. It also suggests EDTA is easily detectable in dried stains of preserved blood that are 2 years old.
What is EDTA used for in forensics?
The most glaring example, according to the experts, was the question of whether blood stains in Halbach’s car allegedly left by Avery contained a chemical preservative known as EDTA, which is used in crime labs to preserve blood samples.
How did Steven Avery’s blood get in the car?
In that same motion Zellner claimed that Avery’s blood did not come from the blood vial, but came from a sink in the laundry room of Steven Avery’s trailer. Steven claimed, in one of his affidavits that in the week of Halbach’s disappearance he re-opened an old cut on his finger and bled in his sink.
What is EDTA contamination?
EDTA contamination was defined as the presence of hyperkalemia (when serum potassium was over 5.8 mmol/L), hypocalcemia (when serum adjusted calcium was <2.00 mmol/L), and hypomagnesemia (when serum magnesium was <0.66 mmol/L) with normal renal function.
What happens when EDTA is added to blood?
Historically, EDTA has been recommended as the anticoagulant of choice for hematological testing because it allows the best preservation of cellular components and morphology of blood cells.
What is EDTA in blood tests?
An EDTA test is used to assess the function of your kidneys through a series of blood tests. EDTA refers to the name of the substance that you will receive by injection. EDTA contains a small amount of radioactive material. This allows it to act as a tracer which will show the kidney function.
Where was the RAV 4 found?
Halbach’s RAV-4 was later found in Avery’s Salvage Yard with Avery’s blood inside, and Halbach’s remains were found in Avery’s burn pit.
How is Bobby Dassey related to Steven Avery?
Bobby Dassey is Stephen Avery’s nephew. Bobby was one of the key witnesses used by the prosecution in the trial against his uncle. In the trial, he testified that he saw Halbach taking photos on Avery’s property but did not see her again after she went into Avery’s trailer.