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| 1-Panel - AMP |
| One Step Amphetamine Test Device (Page 2) |
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1 |
| A side-by-side comparison was conducted using the AMP One Step
Amphetamine Test Device and a leading commercially available AMP
rapid test. Testing was performed on 300 clinical specimens. Ten
percent of the specimens employed were either at -25% or +25% level
of the cut-off concentration of 1,000 ng/mL Amphetamine. Presumptive
positive results were confirmed by GC/MS. The following results were
tabulated: |
|
| Method |
Other AMP Rapid Test |
Total
Results |
AMP One Step
Test Device |
Results |
Positive |
Negative |
| Positive |
140 |
0 |
140 |
| Negative |
6 |
154 |
160 |
| Total Results |
146 |
154 |
300 |
% Agreement With
This Commercial Kit |
96% |
100% |
98% |
|
| When compared at 1,000 ng/mL cut-off with GC/MS, the following
results were tabulated: |
|
| Method |
GC/MS |
Total
Results |
AMP One Step
Test Device |
Results |
Positive |
Negative |
| Positive |
131 |
9 |
140 |
| Negative |
5 |
155 |
160 |
| Total Results |
136 |
164 |
300 |
% Agreement With
GC/MS Analysis |
96% |
95% |
95% |
|
| Eighty (80) of these samples were also run using the AMP One Step
Amphetamine Test Device by an untrained operator at a different
site. Based on GC/MS data, the operator obtained a statistically
similar Positive Agreement, Negative Agreement and Overall Agreement
rate as the laboratory personnel. |
| A drug-free urine pool was spiked with Amphetamine at the
following concentrations: 0 ng/mL, 500 ng/mL, 750 ng/mL, 1,000
ng/mL, 1,250 ng/mL and 1,500 ng/mL. The result demonstrates >99%
accuracy at 50% above and 50% below the cut-off concentration. The
data are summarized below: |
|
Amphetamine
Concentration
(ng/mL) |
Percent
of
Cutoff |
n |
Visual
Result |
| Negative |
Positive |
| 0 |
0% |
30 |
30 |
0 |
| 500 |
-50% |
30 |
30 |
0 |
| 750 |
-25% |
30 |
23 |
7 |
| 1,000 |
Cutoff |
30 |
9 |
21 |
| 1,250 |
+25% |
30 |
1 |
29 |
| 1,500 |
+50% |
30 |
0 |
30 |
| A study was conducted at 3 physicians' offices by untrained
operators using 3 different lots of product to demonstrate the
within run, between run and between operator precision. An identical
panel of coded specimens containing no Amphetamine, 25% Amphetamine
above and below the cut-off and 50% Amphetamine above and below the
1,000 ng/mL cut-off was provided to each site. |
|
Amphetamine
Concentration
(ng/mL) |
n |
Site
A |
Site
B |
Site
C |
| - |
+ |
- |
+ |
- |
+ |
| 0 |
15 |
15 |
0 |
15 |
0 |
15 |
0 |
| 500 |
15 |
14 |
1 |
13 |
2 |
15 |
0 |
| 750 |
15 |
11 |
4 |
7 |
8 |
5 |
10 |
| 1,250 |
15 |
2 |
13 |
0 |
5 |
1 |
14 |
| 1,500 |
15 |
1 |
14 |
1 |
14 |
1 |
14 |
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| Effect of Urinary Specific Gravity |
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| Fifteen (15) urine samples of normal, high, and low specific
gravity ranges were spiked with 500 ng/mL and 1,500 ng/mL of
Amphetamine respectively. The AMP One Step Amphetamine Test Device
was tested in duplicate using the fifteen neat and spiked urine
samples. The results demonstrate that varying ranges of urinary
specific gravity does not affect the test results. |
| The pH of an aliquoted negative urine pool was adjusted to a pH
range of 5 to 9 in 1 pH unit increments and spiked with Amphetamine
to 500 ng/mL and 1,500 ng/mL. The spiked, pH-adjusted urine was
tested with the AMP One Step Amphetamine Test Device in duplicate.
The results demonstrate that varying ranges of pH does not interfere
with the performance of the test. |
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| Specificity and Cross-reactivity:
See Page 1. |
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