Table of Contents

Locator Record

Title: Urine Pregnancy Test (UCPREG_D )
Contact Number: 1-866-441-NCHS
Years of Content: 2005 - 2006
First Published: November, 2007
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Pregnancy Results, UC
Record Source: NHANES 2005 - 2006
Survey Methodology: NHANES 2005 - 2006 is a stratified multistage probability sample of the civilian non-institutionalized population of the U.S.
Medium: NHANES Web site; SAS transport files

Component Description

A urine test was performed on survey participants 8 years and older. If the urine pregnancy test is positive on any female participants aged 8 -17 years, the result is confirmed using a serum test. All positive test results excluded pregnant women from the DXA and cardiovascular fitness components of the mobile examination center.

Eligible Sample

A pregnancy test was completed on female participants aged 12–59 years and menstruating females aged 8–11 years.

Description of Laboratory Methodology

The Icon 25 hCG test kit (Beckman Coulter) is a rapid chromatographic immunoassay for the qualitative detection of human chorionic gonadotropin (hCG) in urine or serum to aid in the early detection of
pregnancy. The test utilizes a combination of monoclonal and polyclonal antibodies to selectively detect elevated levels of hCG in urine or serum.

A detailed description of the laboratory method used can be found on the NHANES website.

Data Processing and Editing

Urine and serum specimens were tested in the NHANES mobile examination centers. Detailed specimen collection and processing instructions are discussed in the NHANES LPM.

Detailed instructions on specimen collection and processing can be found on the NHANES website.

Laboratory Quality Assurance and Monitoring

The NHANES quality control and quality assurance protocols (QA/QC) meet the 1988 Clinical Laboratory Improvement Act mandates. Detailed quality control and quality assurance instructions are discussed in the NHANES Laboratory/Medical Technologists Procedures Manual (LPM). Read the LABDOC file for detailed QA/QC protocols.

A detailed description of the quality assurance and quality control procedures can be found on the NHANES website.

Analytic Notes

A pregnancy test was completed on female participants aged 12–59 and menstruating females aged 8–11 years.

References

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number.
Target:
Females only 8 YEARS - 59 YEARS

URXPREG - Pregnancy test result

Variable Name:
URXPREG
SAS Label:
Pregnancy test result
English Text:
Pregnancy test result
English Instructions:
The test is done on females 8-11 who have started menstruating and all females 12-59 years.
Target:
Females only 8 YEARS - 59 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Positive 367 367
2 Negative 2485 2852
3 Not done 58 2910
4 Invalid 0 2910
. Missing 1 2911