What is a pulmonary function test?

The effectiveness of the lungs is determined by a pulmonary function test. The test evaluates lung volume, capacity, gas exchange, and rate of flow, as well as other lung-related characteristics. Your doctor may be able to identify and treat some lung diseases based on the results.

How are pulmonary function tests performed?

Pulmonary function tests can be performed in two ways, depending on the information your doctor needs. In some cases, your doctor may request both tests since they measure different things. To evaluate your breathing, your doctor may use a spirometer (a device with a mouthpiece) or have you stand inside an air-tight box that resembles a telephone booth.

What does a pulmonary function test measure?

A pulmonary function test evaluates several elements of lung health. Here are a few examples:The volume of the lungs when they are entirely full of air is known as total lung capacity.The amount of air you can forcefully expel once your lungs have been completely filled is known as forced vital capacity.After you've expelled as much as you can, the amount of air left in your lungs.Functional residual capacity is the quantity of air left in your lungs after you typically exhale.

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12 instant-book locations

Quest Diagnostics

Open until 12:00 pm

Mon 7:30 am - 12:00 pm
Tue 7:30 am - 12:00 pm
Wed 7:30 am - 12:00 pm
Thu 7:30 am - 12:00 pm
Fri 7:30 am - 12:00 pm
SatClosed
SunClosed

18322 Clay Rd, Houston, TX 7708418322 Clay Rd

4.12(576 reviews)

Lab testing

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I would 100% recommend this company to anyone wanting to check their health status. The process was incredibly easy and done through certified labs. The results are frequently back by the next day.

Quest Diagnostics

Open until 5:00 pm

Mon 7:00 am - 5:00 pm
Tue 7:00 am - 5:00 pm
Wed 7:00 am - 5:00 pm
Thu 7:00 am - 5:00 pm
Fri 7:00 am - 5:00 pm
Sat 8:00 am - 12:00 pm
SunClosed

27700 Northwest Fwy, Cypress, TX 7743327700 Northwest Fwy

4.43(528 reviews)

Lab testing

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I was very surprised with my experience here. My appointment was made very quickly. I was seen in a very short period of time. My test results came back in a very timely manner. I was able to speak with a doctor soon after and was taking care of. I was very satisfied with the experience I had here. I definitely recommend using them for any issues you have or any questions you may have.

Quest Diagnostics

Open until 5:00 pm

Mon 7:30 am - 5:00 pm
Tue 7:30 am - 5:00 pm
Wed 7:30 am - 5:00 pm
Thu 7:30 am - 5:00 pm
Fri 7:30 am - 5:00 pm
SatClosed
SunClosed

2112 Regional Medical Dr, Wharton, TX 774882112 Regional Medical Dr

4.28(550 reviews)

Lab testing

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I would 100% recommend this company to anyone wanting to check their health status. The process was incredibly easy and done through certified labs. The results are frequently back by the next day.

Quest Diagnostics

Open until 5:00 pm

Mon 7:00 am - 5:00 pm
Tue 7:00 am - 5:00 pm
Wed 7:00 am - 5:00 pm
Thu 7:00 am - 5:00 pm
Fri 7:00 am - 5:00 pm
Sat 8:00 am - 12:00 pm
SunClosed

12344 Barker Cypress Rd, Cypress, TX 7742912344 Barker Cypress Rd

4.43(534 reviews)

Lab testing

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I was able to choose a Quest lab location and schedule an appointment. Check in was easy, and I only needed to provide my name and DOB. They were able to locate my order in their system. They were already aware that my labs were paid for prior to the appointment. I had my labs done on a Wednesday, and I received my results by Saturday. Great experience.

Quest Diagnostics

Open until 6:00 pm

Mon 7:00 am - 6:00 pm
Tue 7:00 am - 6:00 pm
Wed 7:00 am - 6:00 pm
Thu 7:00 am - 6:00 pm
Fri 7:00 am - 6:00 pm
Sat 8:00 am - 12:00 pm
SunClosed

17520 W Grand Pkwy S, Sugar Land, TX 7747917520 W Grand Pkwy S

4.24(415 reviews)

Lab testing

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I came in one day without an appoint and waited two hours as a walk-in before I had to leave without being tested. I made an appointment through Quest Lab Testing for the next day, showed up on time, got tested easily and was on my way in 15-20 minutes. Staff is friendly and helpful.

Quest Diagnostics

Open until 5:00 pm

Mon 8:00 am - 5:00 pm
Tue 7:30 am - 5:00 pm
Wed 8:00 am - 5:00 pm
Thu 7:30 am - 5:00 pm
Fri 8:00 am - 5:00 pm
SatClosed
SunClosed

17510 W Grand Pkwy S, Richmond, TX 7746917510 W Grand Pkwy S

4.24(505 reviews)

Lab testing

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Labcorp

Open until 5:00 pm

Mon 8:00 am - 5:00 pm
Tue 8:00 am - 5:00 pm
Wed 8:00 am - 5:00 pm
Thu 8:00 am - 5:00 pm
Fri 8:00 am - 5:00 pm
SatClosed
SunClosed

12121 Westheimer Rd, Houston, TX 7707712121 Westheimer Rd

4.12(590 reviews)

Lab testing

After receiving my results, I called Labcorp and discussed the results with a consultation. This consultation filled in my knowledge gaps and made me more aware of my particular situation.

Quest Diagnostics

Open until 5:30 pm

Mon 7:00 am - 5:30 pm
Tue 7:00 am - 5:30 pm
Wed 7:00 am - 5:30 pm
Thu 7:00 am - 5:30 pm
Fri 7:00 am - 5:30 pm
SatClosed
SunClosed

12121 Richmond Ave., Houston, TX 7708212121 Richmond Ave.

4.22(543 reviews)

Lab testing

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After receiving my results, I called Quest Lab Testing and discussed the results with a consultation. This consultation filled in my knowledge gaps and made me more aware of my particular situation.

Quest Diagnostics

Open until 12:30 pm

Mon 7:30 am - 12:30 pm
Tue 7:30 am - 12:30 pm
Wed 7:30 am - 12:30 pm
Thu 7:30 am - 12:30 pm
Fri 7:30 am - 12:30 pm
SatClosed
SunClosed

13114 Farm to Market 1960 Rd W, Houston, TX 7706513114 Farm to Market 1960 Rd W

4.42(458 reviews)

Lab testing

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After receiving my results, I called Quest Lab Testing and discussed the results with a consultation. This consultation filled in my knowledge gaps and made me more aware of my particular situation.

Labcorp

Open until 4:00 pm

Mon 7:30 am - 4:00 pm
Tue 7:30 am - 4:00 pm
Wed 7:30 am - 4:00 pm
Thu 7:30 am - 4:00 pm
Fri 7:30 am - 4:00 pm
Sat 7:30 am - 11:30 am
SunClosed

16545 Southwest Fwy, Sugar Land, TX 7747916545 Southwest Fwy

4.44(507 reviews)

Lab testing

I highly recommend for anyone thinking of getting tested. From start to finish the whole process was hassle free and and very professional. I had my results very quickly and discreetly couldn't be happier with the service.

Labcorp

Open until 4:30 pm

Mon 8:00 am - 4:30 pm
Tue 8:00 am - 4:30 pm
Wed 8:00 am - 4:30 pm
Thu 8:00 am - 4:30 pm
Fri 8:00 am - 4:30 pm
SatClosed
SunClosed

1235 Lake Pointe Pkwy, Sugar Land, TX 774781235 Lake Pointe Pkwy

4.55(581 reviews)

Lab testing

Great discreet service, scheduled my visit and paid for for the test online not in Showed up at lab, checked in and was seen within minutes. Blood and urine were collected, test results came back quickly within 2 days because I did my test on a Friday. Quick, easy and cheap. Didn't have to wait for a visit to my PCP, and then get referral to lab.