Preferred Label : PhenX - body composition by dual-energy x-ray absorptiometry protocol 020301:-:Pt:
Patient:-:PhenX;
LOINC status : TRIAL;
LOINC long common name : PhenX - body composition by dual-energy x-ray absorptiometry protocol 020301;
LOINC short name : DXA proto;
LOINC description : If a dual-energy x-ray absorptiometry (DXA) examination is not feasible, the PhenX
Anthropometrics Working Group (WG) noted that other body composition assessment methods
may be considered. For example, bioelectrical impedance analysis (BIA) and skinfold
thickness measures are potentially useful, albeit less precise and valid as indicators
of body composition. Study-specific protocols and equipment descriptions should be
reviewed carefully. In the National Health and Nutrition Examination Survey (NHANES)
a certified radiologic technician positions the participant and operates the DXA scanner
device. Due to concerns about radiation exposure to the unborn fetus, urine pregnancy
tests or self-reported pregnancy history were used to exclude pregnant females from
the NHANES DXA component. Equipment limitations excluded NHANES participants who weighed
more than 300 lbs or were more than 6'5 tall. Individuals with amputations other than
fingers and toes were also excluded from the NHANES DXA exam.The technician should
determine if the participant is wearing metallic items such as jewelry or eyeglasses,
had implanted medical devices such as a pacemaker or artificial joint, or had undergone
certain types of medical tests that might affect the scan results. The NHANES DXA
Procedures Manual describes the protocol, exclusions, and screening questions in detail.
Rigorous quality control procedures are needed to monitor the performance of the DXA
scanner, the performance of the certified radiology technologists who performed the
DXA scan, and the quality of the DXA scans. The NHANES DXA Procedures Manual describes
the quality assurance and quality control measures that were used in NHANES.;
Origin ID : 63520-1;
UMLS CUI : C3172586;
Has component
- Has method
- Has system
- Has time aspect
- Panel of LOINC codes
- Semantic type(s)
