AUBF LAB
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240 questions
| 🇬🇧 | 🇬🇧 |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| Temperature for drug testing urine specimen must be taken within _ from time the of collection | 4 minutes |
| A decrease in urine output | Oliguria |
| The most routinely used method of preservation is? | Refrigeration at 2°C to 8°C |
| Used to produce accurate quantitative results Quantitative chemical tests Can be any of the following: 2 hours 12 hours 24 hours afternoon Fasting (second morning) | 24-Hour (or Timed) Specimen |
| 2- Hour Post Prandial Urine Specimen | Used for screening and monitoring diabetes mellitus patients |
| Used for quantitative examination of urinary sediments | 12- hour Urine Specimen |
| Collected between 2PM-4PM Best for determinatio of bilirubin and urobolinogen | Afternoon Urine Specimen |
| Used to check kidney function Result obtained are quantified and are expressed as units per 24 hours | 24-hour Urine Specimen |
| The process that provides this documentation of proper sample identification from the time of collection to the receipt of laboratory results. | Chain of custody (COC) |
| This type of specimen must contain all the urine produced by the patient in a 24 hour period. Collection may usually begin at a designated morning hour | 24 hour-urine specimen |
| If the urine is not possibly tested within 1-2 hours, urine may be refrigerated at __c to __c for ___hours only. | 4c to 8c and 24 hours |
| Assesses SPECIFIC GRAVITY Method based upon densitometry | HARMONIC OSCILLATION |
| First automated instrument with an FDA-approved automated CSF assay | ADVIA120 Hematology System |
| Terminology used to describe the color of normal urine may differ slightly among laboratories but should be consistent within each laboratory | Normal Urine Color |
| Urine color: Colorless Cause? | Recent fluid consumption |
| Urine color: Pale Yellow Cause? | Polyuria or diabetes insipidus |
| Urine color: Dark yellow Cause? | Concentrated specimen B complex vitamins Dehydration -fever or burns Bilirubin- |
| Antibiotic administered for urinary tract infections | Nitrofurantoin |
| Urine color: Orange-yellow Cause? | Phenazopyridine (Pyridium) Phenindione |
| Drug commonly administered for urinary tract infections | Phenazopyridine (Pyridium |
| Urine color: Yellow-green Cause? | Bilirubin oxidized to biliverdin |
| Urine color: Green Cause? | Pseudomonas infection |
| Urine color: Blue Cause? | Amitriptyline Methocarbamol (Robaxin) Clorets Indican Methylene blue Phenol |
| Urine color: Red Cause? | Hemoglobin Myoglobin-Clear urine with positive chemical test results for blood; muscle damage Beets-Alkaline urine of genetically susceptible persons Rifampin- Tuberculosis medication Menstrual contamination- Cloudy specimen with RBCs, mucus, and clots |
| Urine color: Wine red Cause? | Porphyrins |
| Urine color: Red-brown Cause? | RBCs oxidized to methemoglobin |
| Urine color: Brown Cause? | Homogentisic acid (alkaptonuria) |
| Urine color: Black Cause? | Malignant melanoma Melanin or melanogen Phenol derivatives Argyrol (antiseptic) Methyldopa or levodopa Metronidazole (Flagyl) |
| Melanin is an oxidation product of the colorless pigment, melanogen, produced in excess when a ___ is present. | Malignant melanoma |
| Red urine--Cloudy---means? | Red blood cells present (Hematuria) |
| Red urine-- Clear--Red plasma--mean? | Hemoglobinuria |
| Red urine-- Clear-- Clear plasma-- mean? | Myoglobinuria |
| Nonpathologic Causes of Urine Turbidity | Quamous epithelial cells Mucus Amorphous phosphates, carbonates, urates Semen, spermatozoa Fecal contamination Radiographic contrast media Talcum powder Vaginal creams |
| Pathologic Causes of Urine Turbidity | RBCs WBCs Bacteria Yeast Nonsquamous epithelial cells Abnormal crystals Lymph fluid Lipids |