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UMHS Asthma Guideline, Month 2008
APPENDIX. Predicted Average Peak Expiratory Flow
Note: These charts are for informational purposes only. Spirometry should be used for diagnosis
and staging. "Personal best" measures should be used for the asthma treatment plan.
A. Predicted Average Peak Expiratory Flow forNormal Children and Adolescents (liters/minute)
Height (inches) Males & Females Height (inches) Males & Females
43 147 56 320
44 160 57 334
45 173 58 347
46 187 59 360
47 200 60 373
48 214 61 387
49 227 62 400
50 240 63 413
51 254 64 427
52 267 65 440
53 280 66 454
54 293 67 467
55 307
Adapted from: Polger G, Promedhat V: Pulmonary function testing in children: Techniques and standards,
Philadelphia. W.B. Saunders, 1971.
B. Predicted Average Peak Expiratory Flow for Normal Males (liters / minute)
HEIGHT
AGE
60" 65" 70" 75" 80"
20 554 602 649 693 740
25 543 590 636 679 725
30 532 577 622 664 710
35 521 565 609 651 695
40 509 552 596 636 680
45 498 540 583 622 665
50 486 527 569 607 649
55 475 515 556 593 634
60 463 502 542 578 618
65 452 490 529 564 603
70 440 447 515 550 587
Adapted from: Leiner GC, et al.: Expiratory peak flow rate. Standard values for normal subjects. Use as a
clinical test of ventilatory function. Am Resp Dis 88:644, 1963.
C. Predicted Average Peak Expiratory Flow for Normal Females (liters / minute)
HEIGHT
AGE
55" 60" 65" 70" 75"
20 390 423 460 496 529
25 385 418 454 490 523
30 380 413 448 483 516
35 375 408 442 476 509
40 370 402 436 470 502
45 365 397 430 464 495
50 360 391 424 457 488
55 355 386 418 451 482
60 350 380 412 445 475
65 345 375 406 439 468
70 340 369 400 432 461
Adapted from: Leiner GC, et al.: Expiratory peak flow rate. Standard values for normal subjects. Use as a
clinical test of ventilatory function. Am Resp Dis 88:644, 1963.