Case Notes - ABAcards Results-1-2

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School

Pennsylvania State University *

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Course

100

Subject

Biology

Date

Dec 6, 2023

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docx

Pages

3

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P ENN S TATE U NIVERSITY C RIME L AB 1313 Shaler Way University Park, PA 16802 Case Number: PSUCL-01 Criminalist: Drew Gochnauer Date: 9-OCT-2023 ABAcard Hematrace© Results On 9-OCT-2023 at 1408 , I received the following items of evidence for examination: Item Item Description 5 Doorjamb with bloody fingerprint 19 Towel from kitchen sink 23(b2 ) Richard left shoe: blood spatter 45(d1 ) Ralph shoes: blood spatter 51 Hammer from kitchen drawer, Richard’s house 52 Blue wrecking bar, Ralph’s garage 53 Blue baseball bat, Ralph’s closet 54 Blue crowbar, Richard’s garage The above items were sub-itemized as follows: Item Item Description 5(a) Cutting of blood spatter swab sampled from doorjamb stain 19(a) Cutting of blood spatter swab from towel stains 23(b2a ) Cutting of blood spatter swab from Richard left shoe 45(d1a ) Cutting of blood spatter swab from Ralph’s shoes 51(a) Cutting of blood spatter swab from hammer 52(a) Cutting of blood spatter swab from wrecking bar 53(a) Cutting of blood spatter swab from baseball bat 54(d) Cutting of blood spatter swab from crowbar A swab was lightly moistened with water and run across the surfaces of the above items. A portion of each swab was then cut and placed into a tube, where it was extracted in ABAcard buffer to allow for any hemoglobin antigen to enter the solution. A small drop of the reagent was placed into the S well of an ABAcard Hematrace© device. Ten minutes elapsed before the T and C lines of the cards were read. The following results were obtained: Item 5(a) Item 19(a) Initials: DG Date: 9-OCT-2023 Page 1 of 3 FRNSC 100 – F22
P ENN S TATE U NIVERSITY C RIME L AB 1313 Shaler Way University Park, PA 16802 Item 23(b2a) Item 45(d1a) Item 51(a) Item 52(a) Item 53(a) Item 54(d) Item Results [ + or -] 5(a) – Cutting of blood spatter swab sampled from doorjamb stain + 19(a) – Cutting of blood spatter swab from towel stains + 23(b2a) – Cutting of blood spatter swab from Richard left shoe + 45(d1a) – Cutting of blood spatter swab from Ralph’s shoes + 51(a) – Cutting of blood spatter swab from hammer - 52(a) – Cutting of blood spatter swab from wrecking bar - 53(a) – Cutting of blood spatter swab from baseball bat - 54(d) – Cutting of blood spatter swab from crowbar + Items 23, 45, and 54 – Richard’s left shoe, Ralph’s shoes, and the crowbar respectively – are positive (+) for the presence of human hemoglobin. The hammer, wrecking bar, and baseball bat are negative (-) for the presence of human hemoglobin. Therefore, we can [include/exclude] the hammer, wrecking bar, and baseball bat as the possible murder weapons and must include the crowbar. Items 5 and 19 are both positive (+) for human hemoglobin. Items that were confirmed to have human hemoglobin present are being sent to DNA to try to ascertain to identity of the blood donor. Initials: DG Date: 9-OCT-2023 Page 2 of 3 FRNSC 100 – F22
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