Lab tests CPT 87491 Outpatient

Chlamydia test cost in San Jose, CA

In San Jose-Sunnyvale-Santa Clara, CA, 4 hospitals list a cash price for chlamydia test by nucleic acid amplification (NAAT, PCR-type): from $25.50 to $205.20, with a median of $128.80. The lowest listed price is at Lucile Salter Packard Children's Hospital at Stanford — $103.30 less than the median here. Across California, the median is $54.60 at 96 hospitals.

Cash prices at 4 facilities across 4 cities for code 87491, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Apr 1, 2026.

Lowest$25.50Lucile Salter Packard Children's Hospital at Stanford
Median$128.80half pay less
Highest$205.20in this market
Difference8.0×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in San Jose-Sunnyvale-Santa Clara, CA.

median
Lowest $25.50Highest $274.00

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Lucile Salter Packard Children's Hospital at Stanford lowest Palo Alto, CA · (650) 497-8000 HC 97 Labe182035 Donor Clgc $25.50 $51.00 $24.78 50% Mar 31, 2026
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Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC 097 C Trach Rna Tma Rectal $30.00 $60.00 $29.15 50% Mar 31, 2026
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Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC 097 C Trach Rna Tma Throat $30.00 $60.00 $29.15 50% Mar 31, 2026
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Kaiser Foundation Hospital - Santa Clara Santa Clara, CA · (408) 236-6400 IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ $128.80 $230.00 $32.00–$100.00 44% —
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Kaiser Foundation Hospital - San Jose San Jose, CA · (408) 972-7000 IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ $128.80 $230.00 $32.00–$100.00 44% —
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Stanford Health Care Stanford, CA · (650) 723-4000 Chl Trach Amp Probe Naat $205.20 $513.00 — 60% Apr 1, 2026
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Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC Chl. Trach Amp Probe $274.00 $548.00 $266.27 50% Mar 31, 2026
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Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC Chlamydia Molecular $274.00 $548.00 $266.27 50% Mar 31, 2026
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Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC Chl Trach Amp Probe Naat $274.00 $548.00 $266.27 50% Mar 31, 2026
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Outpatient: lowest $25.50, median $128.80, highest $205.20 — a 8.0× difference within the same market.

As an inpatient, the same code is billed by 3 facilities here, median $128.80. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

Cash or insurance?

At 0 of 3 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.

What it is

This test looks for the genetic material of Chlamydia trachomatis using a nucleic acid amplification test (NAAT), the most accurate type of chlamydia test. It is run on a urine sample or a swab and is used for routine screening and when there are symptoms.

What the price covers

The price usually covers the chlamydia test only. The visit, the sample collection and a gonorrhea test on the same sample (87591) are usually billed separately.

3 rows held back from this comparison

They are priced below $1 or below a tenth of the national median for code 87491 ($114.40). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.

El Camino Hospital Mountain View, CAHC 188672 CHLAMYDIA RECTAL SWAB NAA 1 OF 2 $2.25 file
El Camino Hospital Mountain View, CAHC 188698 CHLAMYDIA PHARYNGEAL SWAB NAA 1 OF 2 $2.25 file
El Camino Hospital Mountain View, CAHC 183194 CHLAMYDIA-PCR $2.25 file