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PrEP, Female, Oral Monitor + HIV RNA

CPT 84702; 86780; 87389; 87491; 87535; 87538; 87591
Synonyms
  • HIV
  • PrEP
  • Prophylaxis

Test Details

Methodology

See individual test components.

Result Turnaround Time

2 - 3 days (testing performed daily)

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

Test Includes

HIV p24 antigen/antibody with reflex to antibody differentiation; HIV-1/2 qualitative RNA; T. pallidum antibody w/reflex to RPR (with titer); Chlamydia/Gonococcus, NAA; human chorionic gonadotropin (hCG), β-subunit, quantitative

Use

This profile aligns with current guidelines for monitoring female patients on oral HIV PrEP.

The profile includes HIV Antibody/p24 Antigen and HIV-1/2 RNA for the detection of HIV infection; Chlamydia trachomatis and Neisseria gonorrhoeae nucleic acid amplification; serologic testing for syphilis; and assessment of pregnancy status.

Special Instructions

This profile requires a dedicated, unopened, gel-barrier tube and a frozen (preferred) or refrigerated serum pour-off tube.

Note: Client must clearly label the site/source of each Chlamydia/Gonococcus Nucleic Acid Amplification specimen.

Tests included within this profile may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R). It is recommended to ask all patients who may be indicated for testing about biotin supplementation. Patients should be cautioned to stop biotin consumption at least 72 hours prior to the collection of a sample.

Limitations

HIV p24 antigen/antibody specimens with reactive results must be investigated by additional supplemental tests. A negative test for an individual does not preclude exposure to or infection with HIV-1 and/or HIV-2. Negative results can occur if the quantity of the marker present in the sample is too low for detection by the assay or if the marker is not present during the stage of disease in which a sample is collected.

References

Centers for Disease Control and Prevention (CDC). Pre-Exposure Prophylaxis (PrEP). CDC website: https://www.cdc.gov/hiv/clinicians/prevention/prep.html. Accessed January 2023.

Specimen Requirements

Specimen

Serum and first-void urine (patient should not have urinated for one hour prior to specimen collection) or endocervical or vaginal swab

Volume

5.5 mL serum and 2 mL of a 20 mL to 30 mL urine collection or one swab (endocervical or vaginal)

Minimum Volume

4.5 mL serum (this volume does not allow for repeat testing) and 2 mL of a 15 mL urine collection or one swab (endocervical or vaginal)

Container

Gel-barrier tube and Gen-Probe® APTIMA® urine specimen transport or APTIMA® swab

Collection Instructions

Serum specimen: Usual blood collection technique.

Option 1: Gen-Probe® Aptima® Endocervical or Vaginal Swab

Endocervical swab: Remove excess mucus from the cervical os and surrounding mucosa using the cleaning swab (white-shaft swab in the package with red printing). Discard this swab. Insert the specimen collection swab (blue-shaft swab in the package with green printing) into the endocervical canal. Gently rotate the swab clockwise for 10 to 30 seconds in the endocervical canal to ensure adequate sampling. Withdraw the swab carefully; avoid contact with the vaginal mucosa. Remove the cap from the swab specimen transport tube and immediately place the specimen collection swab into the transport tube. Carefully break the swab shaft at the scoreline; use care to avoid splashing of the contents. Recap the swab specimen transport tube tightly.

Vaginal swab: Care provider specimen: Collect vaginal fluid sample using the Gen-Probe® Aptima® vaginal swab kit by contacting the swab to the lower third of the vaginal wall and rotating the swab for 10 to 30 seconds to absorb fluid. Immediately place the swab into the transport tube and carefully break the swab shaft against the side of the tube. Tightly screw on the cap. Patient self-collection: Partially open the package of the Gen-Probe® Aptima® vaginal swab kit. Do not touch the soft tip or lay the swab down. If the soft tip is touched, the swab is laid down, or the swab is dropped, use a new Aptima® swab specimen collection kit. Remove the swab. Carefully insert the swab into the vagina about two inches past the introitus and gently rotate the swab for 10 to 30 seconds, making sure the swab touches the walls of the vagina so that moisture is absorbed by the swab. Withdraw the swab without touching the skin. Immediately place the swab into the transport tube, and carefully break the swab shaft against the side of the tube. Tightly screw on the cap.

Option 2: Urine Specimen: The patient should not have urinated for at least one hour prior to specimen collection. Direct patient to provide a first-catch urine (approximately 20 to 30 mL of the initial urine stream) into a urine collection cup free of any preservatives. Collection of larger volumes of urine may result in specimen dilution that may reduce test sensitivity; lesser volumes may not adequately rinse organisms into the specimen. Female patients should not cleanse the labial area prior to providing the specimen. Add urine to the Aptima® Combo 2 urine collection device. The final volume must be between the two black lines on the device (about 2 mL).

PCR test: Centrifuge sample within 24 hours of collection. Transfer serum to a screw-cap polypropylene transport tube. Ship frozen (preferred) or refrigerated.

Stability Requirements

Temperature

Period

Room temperature

Swab: 60 days; urine: 30 days (stability provided by manufacturer or literature reference)

Refrigerated

Serum: 7 days (stability provided by manufacturer or literature reference)

Frozen

Serum: 6 weeks (stability provided by manufacturer or literature reference)

Freeze/thaw cycles

Serum: Stable x4 (stability provided by manufacturer or literature reference)

Storage Instructions

Serum: Gel-barrier tubes refrigerated up to 7 days

PCR test: Frozen up to 6 weeks

APTIMA® Swab or urine: Maintain at room temperature or refrigerate (2°C to 30°C)

Patient Preparation

Patient should not have urinated for one hour prior to specimen collection.

Causes for Rejection

Hemolysis; lipemia; received outside of specimen and/or storage and/or labeling requirements; aliquot received for HIV testing; specimen in expired transport or incorrect transport device; specimens with inappropriate source for test requested; APTIMA® urine transport >30 days from collection; APTIMA® urine transport with incorrect specimen volume; APTIMA® swab transport >60 days from collection; APTIMA® swab specimen without a swab; cleaning swab (white-shaft swab) in APTIMA® swab transport; APTIMA® transport device with multiple swabs

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
254880 PrEP Monitor Oral+HIV RNA (F) 083903 HIV Antibody/p24 Antigen 56888-1
254880 PrEP Monitor Oral+HIV RNA (F) 139826 HIV-1 RNA 25835-0
254880 PrEP Monitor Oral+HIV RNA (F) 139827 HIV-2 RNA 69353-1
254880 PrEP Monitor Oral+HIV RNA (F) 083969 Test Information 55752-0
254880 PrEP Monitor Oral+HIV RNA (F) 082356 T pallidum Antibodies 47236-5
254880 PrEP Monitor Oral+HIV RNA (F) 188078 Chlamydia trachomatis, NAA 43304-5
254880 PrEP Monitor Oral+HIV RNA (F) 188086 Neisseria gonorrhoeae, NAA 43305-2
254880 PrEP Monitor Oral+HIV RNA (F) 019054 PDF 11502-2
254880 PrEP Monitor Oral+HIV RNA (F) 004417 hCG,Beta Subunit,Qnt,Serum mIU/mL 45194-8
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code083903
Result Code NameHIV Antibody/p24 Antigen
UofM
Result LOINC56888-1
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code139826
Result Code NameHIV-1 RNA
UofM
Result LOINC25835-0
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code139827
Result Code NameHIV-2 RNA
UofM
Result LOINC69353-1
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code083969
Result Code NameTest Information
UofM
Result LOINC55752-0
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code082356
Result Code NameT pallidum Antibodies
UofM
Result LOINC47236-5
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code188078
Result Code NameChlamydia trachomatis, NAA
UofM
Result LOINC43304-5
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code188086
Result Code NameNeisseria gonorrhoeae, NAA
UofM
Result LOINC43305-2
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code019054
Result Code NamePDF
UofM
Result LOINC11502-2
Order Code254880
Order Code NamePrEP Monitor Oral+HIV RNA (F)
Order Loinc
Result Code004417
Result Code NamehCG,Beta Subunit,Qnt,Serum
UofMmIU/mL
Result LOINC45194-8
Reflex Table for HIV Antibody/p24 Antigen
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 083938 HIV 1/2 Ab Differentiation 083907 HIV 1 Ab 68961-2
Reflex 1
Order Code083938
Order NameHIV 1/2 Ab Differentiation
Result Code083907
Result NameHIV 1 Ab
UofM
Result LOINC68961-2
Reflex Table for HIV Antibody/p24 Antigen
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 083938 HIV 1/2 Ab Differentiation 083908 HIV 2 Ab 81641-3
Reflex 1
Order Code083938
Order NameHIV 1/2 Ab Differentiation
Result Code083908
Result NameHIV 2 Ab
UofM
Result LOINC81641-3
Reflex Table for T pallidum Antibodies
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 082361 PrEP: RPR 006097 RPR 20507-0
Reflex 1
Order Code082361
Order NamePrEP: RPR
Result Code006097
Result NameRPR
UofM
Result LOINC20507-0
Reflex Table for T pallidum Antibodies
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 082361 PrEP: RPR 006097 RPR 20507-0
Reflex 1
Order Code082361
Order NamePrEP: RPR
Result Code006097
Result NameRPR
UofM
Result LOINC20507-0
Reflex Table for T pallidum Antibodies
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 082361 PrEP: RPR 006097 RPR 20507-0
Reflex 1
Order Code082361
Order NamePrEP: RPR
Result Code006097
Result NameRPR
UofM
Result LOINC20507-0