The temperature of the urine specimen should be recorded within 4 minutes of collection. Initially, the temperature should be between 32°C and 38°C and can remain above 33°C for up to 15 minutes. Deviations from this temperature range may indicate the use of a substituted urine sample.
The pH level of normal urine fluctuates throughout the day but usually falls within the range of 4.5 to 8.0. If the pH level is below 3 or above 11, or if the specific gravity is below 1.002 or above 1.020, specimen contamination should be suspected. Normal human urine should have creatinine concentrations greater than 20 mg/dL. Concentrations below 20 mg/dL are considered dilute, and concentrations below 5 mg/dL are inconsistent with human urine. Urinary nitrite levels should be less than 500 μg/mL. If adulteration is suspected or the results fall outside the established ranges, it is advisable to collect another specimen under direct and observed supervision. URINE SAMPLE EVALUATION PROCEDURE - SVT Specimen Validity Test
The evaluation of urine samples is essential for detecting attempts to manipulate or dilute them in order to avoid detection of drug use. The first step in evaluating a urine sample is to document its temperature and color. To determine if any substances have been added to the urine Various substances, including liquid drain cleaner, chlorine bleach, liquid soap, ammonia, hydrogen peroxide, lemon juice, and eyedrops, have been used to manipulate urine samples. Additionally, there are commercial products available that contain glutaraldehyde, sodium or potassium nitrate, peroxide and peroxidase, and pyridinium chlorochromate (PCC) that have been used by products in the past however they are screened for in labs with a SVT (specimen validity test) . SEE FAKE IT SYNTHETIC URINE UNDER SVT SAMPLE VALIDATION TEST Characteristics -------------Normal Range ................Fake It Levels
Creatinine mg/dL ....................20–400 .......................... 80mg/dl Specific gravity .............../.....1.002–1.030 ....................... .. .1.018 pH ..............................................4.5–8.0 ...............................6.6 Specimen validity testing
A specimen is reported valid (i.e., authenticurine), if the pH is between 4.5 and 9, creatinine >20 mg/dL, and there is no presence of an oxidizing agent. A specimen is considered “dilute” A urine specimen was reported as dilute when the creatinine concentration was ≥2 mg/dL but <20 mg/dL, and the specific gravity was >1.0010 but <1.0030 A specimen is considered “substituted” if creatinine is <2 mg/dL and SpGr is ≤1.0010 or ≥1.020. A specimen is adulterated if the pH is <4.0 or >11.0 and the nitrite level is ≥500 μg/mL. A specimen is invalid if (a) creatinine <2 mg/dL but has acceptable SpGr, or (b) SpGr ≤1.0010 but has acceptable creatinine, or (c) abnormal pH (<3 or >11), or (d) oxidant activity ≥200 μg/mL. |
Fake It presents in all proper levels for all items in a validation screen
creatinine - nitrate glutaraldehyde - Ph Specific gravit - oxididers/PCC ![]() Fake It powdered Synthetic presents within normal ranges on a UA that looks at human health level
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Powdered Synthetic Urine Products
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