Pulmonary Function Test Cost in Illinois (2026): Average Prices & What You'll Pay

What does a pulmonary function test cost in Illinois?

Where you have a pulmonary function test done in Illinois swings the bill from $105 to $259 for identical care. The median cash price across 150 reporting hospitals is $226. The numbers are pulled directly from federally mandated hospital price transparency files.

Once you have a bill or an appointment on the calendar, CostKits can help you keep it all organized.

Where pulmonary function test costs vary in Illinois

Pins show hospitals with price-transparency data (colored by vs. state average) and nearby outpatient clinics and other facilities (colored by type). Click any pin for facility name and estimated cost range.

26+ people checked prices near them this month.

Illinois presents two distinct markets: Chicago (highly competitive, high commercial rates, major academic medical centers) and downstate (lower density, smaller regional systems, lower rates). Northwestern Medicine, Advocate Aurora Health, and Rush University Medical Center compete aggressively in the Chicago market. Downstate Illinois prices typically run 20–35% below Chicago-area rates for identical services.

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Why prices vary - and what it means for your coverage

A small number of hospitals (2) report prices above $575, including Ann & Robert H. Lurie Children's Hospital of Chicago at $581, which drives most of the overall spread - excluding them, most facilities cluster in a much tighter band. Setting matters too: the median outpatient price is $230 versus $278 inpatient (about 1.2× more), so where a procedure happens often matters more than which hospital you pick.

On top of the facility price, your actual bill depends on your deductible, your out-of-pocket maximum, and whether every provider involved - not just the facility - is in-network.

Frequently asked questions: pulmonary function test costs in Illinois

How much does a pulmonary function test cost in Illinois?

The typical insurer-negotiated rate is $71, with most facilities between $29 and $110 (based on 138 hospitals reporting negotiated rates). Posted cash prices start at $57, with a median of $226; outlier facilities are left out. What you pay depends on the facility, your insurance, and whether you have met your deductible.

Where is the cheapest place to get a pulmonary function test in Illinois?

Based on declared prices, the lowest posted price in our Illinois data is Franklin Hospital District in Benton at about $57. By metro, Peoria has the lowest median ($42).

Why is a pulmonary function test so much cheaper at some Illinois hospitals?

Typical prices vary about 3.8× (25th to 70th percentile of negotiated rates) because each hospital sets its own list price, cash discount, and insurer-negotiated rates. In Illinois, the median cash (self-pay) price is $226 versus a median negotiated rate of $71 - about 3.2× higher. Asking for the cash price as well as your insurer's negotiated rate is often the single biggest lever on what you pay.

How much will I actually pay out of pocket for a pulmonary function test in Illinois?

Your out-of-pocket cost depends on your deductible, coinsurance, out-of-pocket maximum, and whether the facility is in-network - not just the sticker price. If you have not met your deductible, you will typically pay the negotiated rate in full until you do. Use the CostKits cost forecaster to estimate your specific out-of-pocket amount before you go.

CostKits compiles hospital price transparency data to help families make informed decisions. Track and manage your healthcare costs (free account).