The sensitivity of
the AxSYM Cocaine Metabolite assay was calculated to be 30.00 ng/mL. This
sensitivity is defined as the lowest measurable concentration which can be
distinguished from zero at least 95% confidence.
Cross-reactivity
was tested for cocaine metabolites. The following compounds cross-react above the sensitivity (30.00 ng/mL)
of the AxSYM Cocaine Metabolite assay:
|
Test
Compound |
Concentration Tested
(ng/mL) |
|
Cocaine |
10,000 |
|
Ecgonine |
10,000 |
The
following compounds do not cross-react above the sensitivity (30.00 ng/mL) of the AxSYM
Cocaine Metabolite assay (Compounds tested at 100,000 ng/mL, unless otherwise
indicated):
|
Acetaminophen |
Melanin |
|
Acetylsalicylic
Acid |
Meperidine |
|
Alprazolam |
Methadone |
|
Amitryptyline |
Methadone
Primary Metabolite (EDDP) |
|
Amobarbital |
d-Methamphetamine |
|
Amoxicillin |
3,4-Methylenedioxyamphetamine
(MDA) |
|
d,l-amphetamine |
3,4-Methylenedioxyethylamphetamine
(MDE) |
|
Ampicilin |
3,4-Methylenedioxymethamphetamine
(MDMA) |
|
Aspartame |
Methylphenidate |
|
Benzocaine |
Methyprylon |
|
Benzoic
Acid |
Morphine |
|
Buprenorphine* |
Nalidixic
Acid* |
|
Butabarbital |
Naloxone |
|
Caffeine |
Naltrexone |
|
Calcium
Hypochlorite |
Naproxen* |
|
Chloramphenicol |
Niacinamide |
|
Chlordiazepoxide |
Nicotine |
|
Chloroquine |
Norfloxacin* |
|
Chlorpheniramine* |
Oxolinic
Acid* |
|
Cholesterol |
Oxycodone |
|
Ciprofloxacin* |
Oxymorphone* |
|
Cinoxacin* |
Penicillin
G* |
|
Clindamycin |
Phenethylamine |
|
Codeine |
Phenobarbital |
|
Diazepam |
Phenothiazine |
|
Digoxin |
Phentermine |
|
Dihydrocodeine |
Phenylbutazone |
|
Dihydromorphine |
Phenylpropanolamine* |
|
Diphenhydramine |
Phenyltoloxamine |
|
Ecgonine
Methyl Ester # |
Piromidic
Acid* |
|
Ephedrine |
Progesterone# |
|
Epinephrine |
Promethazine* |
|
Erythromycin* |
Prolintane |
|
Estriol |
Pseudoephedrine |
|
Fenoprofen* |
Quinine |
|
Furosemide* |
Salicyclic
Acid |
|
Gentisic
Acid |
Secobarbital |
|
Guaiacol
Glyceryl Ether* |
Serotonin |
|
Haloperidol |
Sulindac |
|
Histamine |
Tetracycline |
|
Hydralazine |
11-Nor-delta-9-THC-9-carboxylic
Acid |
|
Hydrocodone |
Theophylline |
|
Hydromorphone |
Tolbutamide |
|
Ibuprofen* |
Trifluoperazine |
|
Isoproteronol |
Trimethoprim |
|
Ketamine* |
Tyramine |
|
Ketoprofen |
Vincristine* |
|
Lovastatan |
|
# Tested
at 10,000 ng/mL
* Tested
at 1,000,000 ng/mL
The following
compounds added to human urine, resulted in less than 10% error in detecting
added drug when assayed with the AxSYM Cocaine Metabolite assay.
|
Compound |
Concentration Tested |
|
|
Acetone |
1 |
g/dL |
|
Ascorbic
Acid |
1.5 |
g/dL |
|
Bilirubin |
0.25 |
mg/dL |
|
Creatinine |
500 |
mg/dL |
|
Ethanol |
1 |
g/dL |
|
Glucose |
2 |
g/dL |
|
Hemoglobin
(lysed red blood cells) |
115 |
mg/dL |
|
Oxalic
Acid |
100 |
mg/dL |
|
Riboflavin |
7.5 |
mg/dL |
|
Sodium
Chloride |
6 |
g/dL |
|
Total
Protein |
0.05 |
g/dL |
|
Urea |
6 |
g/dL |
The
presence of detergents in samples potentially interferes with immunoassay
results.
Bleach
(hypochlorite) is a strong oxidizing agent. As a consequence, bleach may cause
oxidation of some analytes, thus reducing the amount available for analysis.
This may result in lower analytic results, regardless of the methodology.
There
is the possibility that other substances and/or factors not listed above may
interfere with the test and cause false results.
REFERENCE
1. ABBOTT Cocaine Metabolite package
insert, October 1997