Lab tests CPT 87491 Inpatient — admitted to hospital

Chlamydia test cost in Santa Rosa, CA — inpatient

In Santa Rosa-Petaluma, CA, 4 hospitals list a cash price for chlamydia test by nucleic acid amplification (NAAT, PCR-type) as an inpatient: from $12.75 to $128.80, with a median of $54.06. The lowest listed price is at Providence Santa Rosa Memorial Hospital and 1 other hospital — $41.31 less than the median here. Across California, the median is $54.60 at 96 hospitals.

Cash prices at 4 facilities across 3 cities for code 87491, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.

Lowest$12.75Providence Santa Rosa Memorial Hospital + 1 more
Median$54.06half pay less
Highest$128.80in this market
Difference10.1×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 Santa Rosa-Petaluma, CA.

median
Lowest $12.75Highest $265.71

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Providence Santa Rosa Memorial Hospital lowest Santa Rosa, CA · (707) 525-5300 HC CHLAMYDIA TRACHOMATIS PCR $12.75 $25.00 — 49% Apr 1, 2026
source file
Petaluma Valley Hospital lowest Petaluma, CA · (707) 778-1111 HC CHLAMYDIA TRACHOMATIS PCR $12.75 $25.00 — 49% Apr 1, 2026
source file
Providence Santa Rosa Memorial Hospital Santa Rosa, CA · (707) 525-5300 HC IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ LAB $30.60 $60.00 — 49% Apr 1, 2026
source file
Providence Santa Rosa Memorial Hospital Santa Rosa, CA · (707) 525-5300 HC IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ $30.60 $60.00 — 49% Apr 1, 2026
source file
Petaluma Valley Hospital Petaluma, CA · (707) 778-1111 HC IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ $30.60 $60.00 — 49% Apr 1, 2026
source file
Providence Santa Rosa Memorial Hospital Santa Rosa, CA · (707) 525-5300 HC CHLAMYDIA TRACHOMATIS AMPLIFIED DNA $30.60 $60.00 — 49% Apr 1, 2026
source file
Petaluma Valley Hospital Petaluma, CA · (707) 778-1111 HC CHLAMYDIA TRACHOMATIS AMPLIFIED DNA $30.60 $60.00 — 49% Apr 1, 2026
source file
Petaluma Valley Hospital Petaluma, CA · (707) 778-1111 HC IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ LAB $30.60 $60.00 — 49% Apr 1, 2026
source file
Healdsburg Hospital Healdsburg, CA · (707) 431-6500 HC CHLAMYDIA TRACHOMATIS PCR $95.37 $187.00 — 49% Apr 1, 2026
source file
Kaiser Foundation Hospital - Santa Rosa Santa Rosa, CA · (707) 571-4000 IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ $128.80 $230.00 $32.00–$100.00 44% —
source file
Healdsburg Hospital Healdsburg, CA · (707) 431-6500 HC IADNA CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE TQ LAB $265.71 $521.00 — 49% Apr 1, 2026
source file

Inpatient: lowest $12.75, median $54.06, highest $128.80 — a 10.1× difference within the same market.

As an outpatient, the same code is billed by 4 facilities here, median $54.06 — that is the price to compare if you are not being admitted.

Cash or insurance?

At the one hospital here that publishes insurer rates for this code, the cash price is not below the highest rate a health plan has negotiated. 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.

2 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.

Providence Santa Rosa Memorial Hospital Santa Rosa, CAHC CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE $6.38 file
Petaluma Valley Hospital Petaluma, CAHC CHLAMYDIA TRACHOMATIS AMPLIFIED PROBE $6.38 file