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HIV Testing:
20 min result, 28 days after sex
STD Testing:
Full & comprehensive

Chlamydia Testing Singapore | Shim Clinic

Chlamydia Testing Singapore. Chlamydia testing allows you to check for a chlamydia infection after unprotected sex: condom break, slip, or no condom. The urethra, vagina, anus, and throat can be tested in our private & confidential STD clinic.

 


 

LABORATORY TESTS

  • Chlamydia trachomatis is an intracellular organism, specimens must include epithelial cells and not exudates alone.
  • Nucleic acid-based amplification tests (NAAT): most sensitive 90–95%, highly specific, new gold standard; polymerase chain reaction (PCR) can be used to test a range of specimens (urine, urethral, cervical, rectal, pharyngeal).
  • Females – cervical or vulvo-vaginal swabs are specimens of choice, followed by first void urine (FVU); males – FVU is as sensitive as urethral swabs; care with inhibitors with urine specimens; storing urine overnight at 40C or freeze-thawing may enhance sensitivity of urine specimens.
  • NAATs may be used for conjunctival, pharyngeal and rectal specimens, although currently unlicensed for these sites; rectal swabs should be obtained via proctoscopy.
  • Medico legal cases – samples for NAAT should be taken from all the sites where penetration has occurred, a reactive NAAT result must be confirmed using a different NAAT.
  • Antigen detection methods – Direct Florescent Antigen (DFA) sensitivity 50–90%; enzyme immunoassay (EIA) poor sensitivity 50–70%, specificity >95%, inexpensive, can be used for large numbers of specimens. FVU or urethral swabs can be used for males, endocervical swabs are preferred for women.
  • Cell culture for chlamydia in McCoy cell monolayers, used to be the gold-standard, it is fairly sensitive (70–80%) and 100% specific, requires stringent cold-chain, costly, very expensive, not readily available anymore.
  • Giemsa-stained direct smear for the inclusion bodies within infected cells is useful only for ocular infections.
  • Serological tests are not useful to diagnose acute chlamydial infections because of cross-reactivity between chlamydial species, high prevalence of chlamydia antibodies in high risk populations, and the unpredictability of serological response and changes in titres of IgM and IgG antibodies in acute uncomplicated infections.

 


 



Sexual risk (of HIV/STD/pregnancy), and what you can do before and after exposure.

Timeline HIV STD Pregnancy
Before exposure
Abstain from sex, Be faithful, or Condom use
Circumcision (males only)
Contraception
(females only)
HIV PrEP (pre-exposure prophylaxis)
– Stop HIV infection before exposure
STD vaccine:
Hepatitis vaccine
HPV vaccine
STD / HIV exposure
Unsafe sex / unprotected sex:
No condom / Condom broke / Condom slip
0-72 hours HIV PEP (post-exposure prophylaxis)
– Stop HIV infection after exposure
STD testing *
Screening test
– to look for asymptomatic infections
– from previous exposures
Emergency contraception
with the
morning-after pill
(females only)
2 weeks HIV DNA Test
1 month HIV 4th Generation Test
SD Bioline HIV Ag/Ab Combo
– Fingerprick blood sampling.
20 minutes to results
3 months HIV 3rd Generation Test
OraQuick® HIV-1/2 Antibody
– Oral fluid or
– Fingerprick blood sampling.
20 minutes to results
STD testing *
– Full & comprehensive
diagnostic test
– to look for current infections
Watch for HIV Symptoms STD Symptoms
If infected HIV Treatment STD Treatment Abortion

* Males: Do not urinate for at least 4 hours before arriving.
* Females: testing is more accurate when you are not menstruating.