Upper extremity arterial (UEA) duplex scan |
Upper extremity venous (UEV) duplex scan |
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Urea nitrogen |
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Urethral pressure profile (UPP) |
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Uric acid crystals |
Urinalysis (UA) |
Urinalysis Chemstrip Screen |
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Urinary infections, viral |
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Urine 5-HIAA, quantitative (24-hour) in urine |
Urine albumin |
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Urine amylase excretion and clearance, random and timed |
Urine appearance |
Urine ß2-microglobulin |