Table 1 Initial MALDI MS proteomic analysis of 40 blind samples randomly selected and in order of analysis.

From: Pre-validation of a MALDI MS proteomics-based method for the reliable detection of blood and blood provenance

Sample no BET & reaction I ID level (blood?) II ID level (if blood, human/animal) III ID level (animal species?) True identity Correct claim?
1 S None Yes Human N/A Bovine No
2 S None Yes Human N/A Human Yes
3 S None Yes Human N/A Human Yes
5 S AB-1 +  Yes Animal Bovine Bovine Yes
6 S None Yes Human N/A Human Yes
7 S None Yes Inconclusive Inconclusive Porcine No
12 S None No N/A N/A Sweat Yes
13 S LCV+  No N/A N/A Porcine No
14 S AB-1 +  No N/A N/A Human No
16 S None Yes Human N/A Human Yes
17 S None Yes Human N/A Human Yes
18 S None Yes Animal Porcine Wild boar Yes
26 S LCV−  No N/A N/A Saliva Yes
27 S None No N/A N/A Semen Yes
28 S None No N/A N/A Bovine No
29 S AY-7 +  No N/A N/A Chicken No
30 S AB-1 +  No N/A N/A Egg yolk Yes
31 S LCV+  Yes Human N/A Human Yes
34 S LCV+  Yes Human N/A Human + EDTA Yes
35 S None No N/A N/A Chicken No
36 S None No N/A N/A Ketchup Yes
37 S None Yes Human N/A Human Yes
40 S None No N/A N/A Sweat Yes
41 S AB-1 +  No N/A N/A Ketchup Yes
49 S AB-1 +  No N/A N/A Saliva Yes
53 S None Yes Human N/A Human + EDTA Yes
56 S None No N/A N/A Porcine No
57 S None No N/A N/A Paint Yes
59 S None Yes Human N/A Human Yes
60 S AY-7 +  No N/A N/A Saliva Yes
61 S None Yes Human N/A Human Yes
63 S LCV− faint No N/A N/A Chicken No
78 S None No N/A N/A Lotion gold bond Yes
79 S None No N/A N/A Blank Yes
122 F AY-7 +  Yes Human N/A Human Yes
141 F AB+ (spotty) No N/A N/A Ketchup Yes
160 F AY-7 −  No N/A N/A Saliva Yes
162 F AB-1 +  Yes Human N/A Human Yes
165 F AY-7 +  No N/A N/A Egg white Yes
175 F LCV−  No N/A N/A Egg white Yes
  1. S (stain), F (fingermark). BET indicates “blood enhancement technique” and the corresponding column shows “none” for none applied or reports the name of the technique with the enhancement result; “−” indicates no enhancement whereas “+” indicates enhancement. AB-1 (Acid Black 1); LCV (Leucocrystal Violet); AY-7 (Acid Yellow 7).